{"id":225,"date":"2025-06-17T17:38:38","date_gmt":"2025-06-17T17:38:38","guid":{"rendered":"https:\/\/giugocviet.org\/?p=225"},"modified":"2025-06-28T17:13:38","modified_gmt":"2025-06-28T17:13:38","slug":"day-so-tu-cai-bung-doi-toi-may-thu-dau-dau","status":"publish","type":"post","link":"https:\/\/giugocviet.org\/?p=225","title":{"rendered":"D\u00e3y s\u1ed1 \u2013 T\u1eeb c\u00e1i b\u1ee5ng \u0111\u00f3i t\u1edbi m\u1ea5y th\u1ee9 \u0111au \u0111\u1ea7u"},"content":{"rendered":"<div class=\"seriesmeta\">This entry is part 2 of 2 in the series <a href=\"https:\/\/giugocviet.org\/?series=day-so\" class=\"series-4\" title=\"To\u00e1n h\u1ecdc\">To\u00e1n h\u1ecdc<\/a><\/div>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\ud83e\udea8 GIAI \u0110O\u1ea0N 1: \u00dd TH\u1ee8C V\u1ec0 S\u1ed0 \u2013 T\u1eea C\u1ea2M NH\u1eacN M\u01a0 H\u1ed2 \u0110\u1ebeN \u0110O \u0110\u1ebeM R\u00d5 R\u00c0NG<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>D\u00e3y s\u1ed1 \u2013 T\u1eeb c\u00e1i b\u1ee5ng \u0111\u00f3i t\u1edbi m\u1ea5y th\u1ee9 \u0111au \u0111\u1ea7u<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. H\u1ed3i \u0111\u1ea7u \u2013 lo c\u00e1i b\u1ee5ng l\u00e0 ch\u00ednh<\/h2>\n\n\n\n<p>Th\u1eddi <strong>\u00f4ng b\u00e0 t\u1ed5 ti\u00ean nguy\u00ean th\u1ee7y<\/strong>, chuy\u1ec7n quan tr\u1ecdng nh\u1ea5t l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ebfm g\u00ec \u0103n cho s\u1ed1ng s\u00f3t,<\/li>\n\n\n\n<li>\u0102n xong ngh\u1ec9 cho l\u1ea1i s\u1ee9c,<\/li>\n\n\n\n<li>H\u00f4m sau l\u1ea1i \u0111i s\u0103n ti\u1ebfp.<\/li>\n<\/ul>\n\n\n\n<p>L\u00fac \u0111\u00f3 <strong>ai r\u1ea3nh \u0111\u00e2u m\u00e0 \u0111\u1ebfm s\u1ed1!<\/strong> C\u00f3 c\u1ee7 khoai n\u00e0o th\u00ec m\u1eebng c\u1ee7 \u0111\u00f3, c\u00f3 c\u00e1 n\u00e0o th\u00ec r\u00e1ng b\u1eaft, ch\u1ee9 <strong>\u0111\u1ebfm v\u1edbi \u0111o l\u00e0m g\u00ec cho m\u1ec7t.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Khi m\u1ecdi th\u1ee9 b\u1eaft \u0111\u1ea7u r\u1eafc r\u1ed1i<\/h2>\n\n\n\n<p>R\u1ed3i m\u1ed9t ng\u00e0y, nh\u1edd <strong>s\u0103n b\u1eaft gi\u1ecfi h\u01a1n<\/strong>, gom \u0111\u01b0\u1ee3c <strong>nhi\u1ec1u h\u01a1n.<\/strong><br>\u0110\u1ebfn khi chia ph\u1ea7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201c\u00ca, sao m\u00e0y l\u1ea5y nhi\u1ec1u h\u01a1n tao?\u201d<\/li>\n\n\n\n<li>\u201cKh\u00f4ng nha, tao c\u1ea7m \u0111\u00fang ph\u1ea7n tao!\u201d<\/li>\n\n\n\n<li>\u201cKh\u00f4ng tin! \u0110\u1ebfm l\u1ea1i!\u201d<br>\u2192 C\u00e3i nhau \u1ea7m tr\u1eddi, th\u1eadm ch\u00ed \u0111\u1eadp nhau u \u0111\u1ea7u.<\/li>\n<\/ul>\n\n\n\n<p>L\u00fac \u0111\u00f3 m\u1edbi l\u00f3e \u00fd:<br><strong>\u201cPh\u1ea3i \u0111\u1ebfm \u0111i, kh\u1ecfi tranh c\u00e3i!\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u0110\u1ebfm ki\u1ec3u g\u00ec? (Ch\u01b0a c\u00f3 s\u1ed1)<\/h2>\n\n\n\n<p>H\u1ed3i \u0111\u00f3 ch\u01b0a c\u00f3 s\u1ed1 m\u00e1 g\u00ec h\u1ebft, ng\u01b0\u1eddi ta:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ebfm b\u1eb1ng que, \u0111\u00e1, h\u1ea1t l\u00faa.<\/li>\n\n\n\n<li>C\u00f3 bao nhi\u00eau c\u1ee7 khoai \u2192 \u0111\u1ec3 b\u1ea5y nhi\u00eau vi\u00ean \u0111\u00e1.<\/li>\n\n\n\n<li>Ai l\u1ea5y \u0111i th\u00ec b\u1ecf b\u1edbt vi\u00ean \u0111\u00e1.<\/li>\n<\/ul>\n\n\n\n<p>C\u1ee9 th\u1ebf m\u00e0 <strong>qu\u1ea3n l\u00fd \u201ch\u00e0ng t\u1ed3n\u201d v\u00e0 bi\u1ebft ai \u0103n gian.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. T\u1eeb \u0111\u1ebfm th\u00e0nh s\u1ed1 (V\u00e0 c\u00fa n\u1ed5 l\u1edbn: S\u1ed1 0)<\/h2>\n\n\n\n<p>Nh\u00ecn m\u00e3i \u0111\u1ed1ng \u0111\u00e1 th\u00ec m\u1ec7t qu\u00e1, th\u1ebf l\u00e0 c\u00e1c n\u1ec1n v\u0103n minh ngh\u0129 ra <strong>k\u00fd hi\u1ec7u s\u1ed1:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ai C\u1eadp: v\u1ebd que, v\u1ebd v\u00f2ng.<\/li>\n\n\n\n<li>La M\u00e3: I, V, X\u2026<\/li>\n\n\n\n<li>Trung Hoa: n\u00e9t g\u1ea1ch, d\u00e2y th\u1eaft.<\/li>\n<\/ul>\n\n\n\n<p>Nh\u01b0ng r\u1ed3i c\u00f3 m\u1ed9t v\u1ea5n \u0111\u1ec1:<br>\ud83d\udc49 <strong>L\u00e0m sao ghi \u201ckh\u00f4ng c\u00f3 g\u00ec\u201d?<\/strong><br>V\u00ed d\u1ee5: 105 con b\u00f2 \u2013 kh\u00f4ng c\u00f3 s\u1ed1 0 th\u00ec ng\u01b0\u1eddi ta nh\u00ecn v\u00e0o d\u1ec5 t\u01b0\u1edfng\u2026 15 con b\u00f2.<br>Ho\u1eb7c kho g\u1ea1o h\u1ebft s\u1ea1ch \u2192 ph\u1ea3i ghi r\u00f5 l\u00e0 <strong>0 bao g\u1ea1o.<\/strong><\/p>\n\n\n\n<p>M\u1ea5y n\u1ec1n v\u0103n minh l\u1edbn nh\u01b0 Ai C\u1eadp, La M\u00e3\u2026 <strong>kh\u00f4ng c\u00f3 s\u1ed1 0.<\/strong> L\u00fac c\u1ea7n th\u00ec \u0111\u1ec3 tr\u1ed1ng ho\u1eb7c l\u00e1ch b\u1eb1ng t\u1eeb ng\u1eef, nh\u01b0ng d\u1ec5 g\u00e2y nh\u1ea7m l\u1eabn.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2753 <strong>V\u00ec sao l\u1ea1i c\u1ea7n ghi l\u1ea1i c\u00e1i &#8220;kh\u00f4ng c\u00f3&#8221;?<\/strong><\/h3>\n\n\n\n<p><strong>1\ufe0f\u20e3 Gi\u1eef ch\u1ed7 \u2013 tr\u00e1nh nh\u1ea7m:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vi\u1ebft 105 m\u00e0 kh\u00f4ng c\u00f3 s\u1ed1 0 \u2192 d\u1ec5 b\u1ecb hi\u1ec3u l\u1ea7m th\u00e0nh 15.<\/li>\n\n\n\n<li>S\u1ed1 0 gi\u00fap <strong>gi\u1eef ch\u1ed7,<\/strong> r\u00f5 r\u00e0ng: \u1edf gi\u1eefa l\u00e0 tr\u1ed1ng nh\u01b0ng c\u00f3 ngh\u0129a.<\/li>\n<\/ul>\n\n\n\n<p><strong>2\ufe0f\u20e3 Theo d\u00f5i bi\u1ebfn \u0111\u1ed5i:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kho c\u00f3 5 bao g\u1ea1o, xu\u1ea5t h\u1ebft \u2192 c\u00f2n 0 bao.<\/li>\n\n\n\n<li>Kh\u00f4ng ghi s\u1ed1 0 \u2192 ai c\u0169ng ngh\u0129 kho n\u00e0y ch\u01b0a t\u1eebng c\u00f3 g\u1ea1o!<\/li>\n<\/ul>\n\n\n\n<p><strong>3\ufe0f\u20e3 L\u00e0m b\u1ea3ng s\u1ed1 li\u1ec1n m\u1ea1ch:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V\u00ed d\u1ee5 ghi s\u1ed1 gi\u1edd n\u1eafng: c\u00f3 ng\u00e0y m\u01b0a t\u1ea7m t\u00e3 \u2192 0 gi\u1edd n\u1eafng.<\/li>\n\n\n\n<li>N\u1ebfu b\u1ecf qua s\u1ed1 0 \u2192 d\u1eef li\u1ec7u b\u1ecb \u0111\u1ee9t \u0111o\u1ea1n, l\u00e0m to\u00e1n r\u1ed1i lo\u1ea1n.<\/li>\n<\/ul>\n\n\n\n<p><strong>4\ufe0f\u20e3 X\u00e1c nh\u1eadn \u201ckh\u00f4ng\u201d c\u0169ng l\u00e0 tr\u1ea1ng th\u00e1i:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u00e0i kho\u1ea3n ng\u00e2n h\u00e0ng 0 \u0111\u1ed3ng \u2192 ph\u1ea3i ghi r\u00f5 <strong>\u201c0 \u0111\u1ed3ng\u201d<\/strong> ch\u1ee9 kh\u00f4ng th\u1ec3 tr\u1ed1ng kh\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 V\u1eady n\u00ean s\u1ed1 0 <strong>kh\u00f4ng ch\u1ec9 l\u00e0 \u201ckh\u00f4ng c\u00f3 g\u00ec\u201d m\u00e0 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ef1c k\u1ef3 quan tr\u1ecdng \u0111\u1ec3 h\u1ec7 th\u1ed1ng s\u1ed1 v\u1eadn h\u00e0nh tr\u01a1n tru.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\uddee\ud83c\uddf3 <strong>T\u1ea1i sao l\u1ea1i l\u00e0 \u1ea4n \u0110\u1ed9 ngh\u0129 ra s\u1ed1 0?<\/strong><\/h3>\n\n\n\n<p>\u1ea4n \u0110\u1ed9 c\u00f3:<br>\ud83d\udc49 <strong>(1) T\u01b0 duy s\u00e2u:<\/strong> Tri\u1ebft h\u1ecdc \u1ea4n \u0110\u1ed9 <strong>coi \u201ctr\u1ed1ng\u201d l\u00e0 m\u1ed9t tr\u1ea1ng th\u00e1i t\u1ef1 nhi\u00ean,<\/strong> kh\u00f4ng s\u1ee3 h\u01b0 v\u00f4.<br>\ud83d\udc49 <strong>(2) Nhu c\u1ea7u th\u1ef1c t\u1ebf:<\/strong> H\u1ecd bu\u00f4n b\u00e1n nhi\u1ec1u, l\u00e0m thi\u00ean v\u0103n, hay g\u1eb7p t\u00ecnh hu\u1ed1ng ph\u1ea3i <strong>ghi \u201ckh\u00f4ng\u201d r\u00f5 r\u00e0ng.<\/strong><br>\ud83d\udc49 <strong>(3) T\u01b0 duy h\u1ec7 th\u1ed1ng:<\/strong> Kh\u00f4ng ch\u1ec9 ngh\u0129 ra s\u1ed1 0 m\u00e0 c\u00f2n <strong>\u0111\u01b0a v\u00e0o h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n (0, 1, 2\u2026 9)<\/strong> b\u00e0i b\u1ea3n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udca5 <strong>C\u00fa n\u1ed5: S\u1ed1 0 ra \u0111\u1eddi<\/strong><\/h3>\n\n\n\n<p>Th\u1ebf k\u1ef7 5\u20137, c\u00e1c nh\u00e0 to\u00e1n h\u1ecdc \u1ea4n \u0110\u1ed9 (nh\u01b0 Brahmagupta):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1eb7t t\u00ean s\u1ed1 0 l\u00e0 <strong>shunya (tr\u1ed1ng r\u1ed7ng).<\/strong><\/li>\n\n\n\n<li>V\u1ebd k\u00fd hi\u1ec7u: <strong>v\u00f2ng tr\u00f2n nh\u1ecf.<\/strong><\/li>\n\n\n\n<li>\u0110\u01b0a s\u1ed1 0 v\u00e0o ph\u00e9p to\u00e1n: c\u1ed9ng, tr\u1eeb, nh\u00e2n\u2026 c\u00f3 lu\u1eadt ri\u00eang cho 0.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 L\u1ea7n \u0111\u1ea7u ti\u00ean <strong>\u201ckh\u00f4ng\u201d tr\u1edf th\u00e0nh m\u1ed9t con s\u1ed1 th\u1eadt s\u1ef1,<\/strong> kh\u00f4ng ch\u1ec9 l\u00e0 d\u1ea5u t\u1ea1m.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\ude80 <strong>V\u00ec sao s\u1ed1 0 l\u1ee3i h\u1ea1i?<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ghi s\u1ed1 l\u1edbn d\u1ec5 d\u00e0ng:<\/strong> 1000 \u2192 1 v\u00e0 ba s\u1ed1 0, g\u1ecdn g\u00e0ng.<\/li>\n\n\n\n<li><strong>Gi\u1eef tr\u1eadt t\u1ef1:<\/strong> Ph\u00e2n bi\u1ec7t 1, 10, 100\u2026 c\u1ef1c r\u00f5.<\/li>\n\n\n\n<li><strong>To\u00e1n ch\u1ea1y m\u01b0\u1ee3t:<\/strong> T\u00ednh to\u00e1n l\u1edbn m\u00e0 kh\u00f4ng c\u00f3 s\u1ed1 0 \u2192 nh\u1ea7m l\u00ean nh\u1ea7m xu\u1ed1ng.<\/li>\n\n\n\n<li><strong>M\u1edf ra \u0111\u1ea1i s\u1ed1 \u2013 to\u00e1n hi\u1ec7n \u0111\u1ea1i:<\/strong> S\u1ed1 0 cho ph\u00e9p ph\u00e1t tri\u1ec3n c\u00e1c ph\u00e9p to\u00e1n n\u00e2ng cao.<\/li>\n\n\n\n<li><strong>N\u1ec1n t\u1ea3ng c\u00f4ng ngh\u1ec7:<\/strong> M\u00e1y t\u00ednh ng\u00e0y nay <strong>ch\u1ea1y b\u1eb1ng 0 v\u00e0 1.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u270f\ufe0f V\u00ed d\u1ee5 d\u1ec5 hi\u1ec3u:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kh\u00f4ng c\u00f3 0:<\/strong> Vi\u1ebft 105 \u2192 d\u1ec5 nh\u1ea7m th\u00e0nh 15.<\/li>\n\n\n\n<li><strong>C\u00f3 0:<\/strong> 105 \u2192 nh\u00ecn ph\u00e1t hi\u1ec3u ngay.<\/li>\n\n\n\n<li><strong>Kh\u00f4ng c\u00f3 0:<\/strong> Kho h\u1ebft h\u00e0ng \u2192 kh\u00f4ng ghi g\u00ec, d\u1ec5 hi\u1ec3u nh\u1ea7m.<\/li>\n\n\n\n<li><strong>C\u00f3 0:<\/strong> Ghi r\u00f5 \u201c0 bao g\u1ea1o\u201d \u2192 ai c\u0169ng hi\u1ec3u kho t\u1eebng \u0111\u1ea7y, gi\u1edd m\u1edbi h\u1ebft.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udca3 <strong>K\u1ebft s\u1ed1 0:<\/strong><\/h3>\n\n\n\n<p>S\u1ed1 0 nh\u00ecn th\u00ec nh\u1ecf nh\u01b0ng l\u00e0 <strong>th\u1ee9 \u201cl\u1eadt m\u1eb7t\u201d to\u00e1n h\u1ecdc:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gi\u00fap h\u1ec7 \u0111\u1ebfm ho\u00e0n ch\u1ec9nh,<\/li>\n\n\n\n<li>L\u00e0m n\u1ec1n cho to\u00e1n hi\u1ec7n \u0111\u1ea1i,<\/li>\n\n\n\n<li>V\u00e0 ng\u00e0y nay <strong>gi\u1eef vai tr\u00f2 c\u1ed1t l\u00f5i trong c\u00f4ng ngh\u1ec7 s\u1ed1, m\u00e1y t\u00ednh, AI.<\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong>Kh\u00f4ng c\u00f3 s\u1ed1 0 th\u00ec to\u00e1n h\u1ecdc m\u00e3i ch\u1ec9 l\u00e0 b\u1ea3ng \u0111\u1ebfm c\u1ee7 khoai; c\u00f3 s\u1ed1 0 r\u1ed3i, n\u00f3 nh\u1ea3y v\u1ecdt th\u00e0nh c\u00f4ng c\u1ee5 ki\u1ec3m so\u00e1t c\u1ea3 th\u1ebf gi\u1edbi.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. D\u00e3y s\u1ed1 l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>N\u00f3i n\u00f4m na: <strong>d\u00e3y s\u1ed1 l\u00e0 m\u1ea5y con s\u1ed1 x\u1ebfp h\u00e0ng theo th\u1ee9 t\u1ef1.<\/strong><br>V\u00ed d\u1ee5:<br><code>1, 2, 3, 4, 5\u2026<\/code><br>ho\u1eb7c:<br><code>0, 2, 4, 6, 8\u2026<\/code><\/p>\n\n\n\n<p>M\u1ed7i d\u00e3y ch\u1ea1y theo <strong>m\u1ed9t lu\u1eadt nh\u1ea5t \u0111\u1ecbnh:<\/strong> c\u1ed9ng th\u00eam, nh\u00e2n l\u00ean, ho\u1eb7c nh\u1ea3y lo\u1ea1n h\u01a1n.<\/p>\n\n\n\n<p>N\u00f3 l\u00e0 <strong>c\u00e1ch con ng\u01b0\u1eddi ghi l\u1ea1i nh\u1eefng th\u1ee9 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, ho\u1eb7c bi\u1ebfn \u0111\u1ed5i theo nh\u1ecbp n\u00e0o \u0111\u00f3.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. Ai ngh\u0129 ra?<\/h2>\n\n\n\n<p>Kh\u00f4ng c\u00f3 \u201c\u00f4ng t\u1ed5\u201d ch\u00ednh th\u1ee9c, nh\u01b0ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ai C\u1eadp: \u0111o \u0111\u1ea5t, \u0111\u1ebfm l\u00faa.<\/li>\n\n\n\n<li>Babylon: l\u00e0m l\u1ecbch.<\/li>\n\n\n\n<li>\u1ea4n \u0110\u1ed9: th\u00eam qu\u1ea3 bom s\u1ed1 0 \u2192 to\u00e1n h\u1ecdc b\u00f9ng n\u1ed5.<\/li>\n<\/ul>\n\n\n\n<p>D\u00e3y s\u1ed1 l\u00e0 th\u1ee9 lo\u00e0i ng\u01b0\u1eddi <strong>t\u1ef1 ngh\u0129 ra \u0111\u1ec3 s\u1eafp x\u1ebfp th\u1ebf gi\u1edbi cho d\u1ec5 hi\u1ec3u h\u01a1n.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. N\u00f3 d\u00f9ng l\u00e0m g\u00ec?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ebfm ti\u1ec1n, \u0111\u1ebfm ng\u00e0y.<\/li>\n\n\n\n<li>\u0110o kho\u1ea3ng c\u00e1ch, x\u00e2y c\u1ea7u.<\/li>\n\n\n\n<li>M\u00e1y t\u00ednh, ng\u00e2n h\u00e0ng, m\u1eadt m\u00e3\u2026 t\u1ea5t t\u1eadt \u0111\u1ec1u ch\u1ea1y b\u1eb1ng d\u00e3y s\u1ed1.<\/li>\n<\/ul>\n\n\n\n<p>Th\u1eadm ch\u00ed <strong>ADN trong c\u01a1 th\u1ec3 m\u00ecnh<\/strong> c\u0169ng l\u00e0 <strong>m\u1ed9t lo\u1ea1i d\u00e3y s\u1ed1 sinh h\u1ecdc.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. Ban \u0111\u1ea7u ch\u1ec9 \u0111\u1ec3 ghi \u2013 r\u1ed3i soi l\u1ea1i th\u1ea5y kh\u1ee7ng<\/h2>\n\n\n\n<p>L\u00fac \u0111\u1ea7u, d\u00e3y s\u1ed1 ch\u1ec9 l\u00e0 <strong>c\u00f4ng c\u1ee5 ghi ch\u00e9p hi\u1ec7n t\u01b0\u1ee3ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ebfm c\u1ee7 khoai,<\/li>\n\n\n\n<li>\u0110\u1ebfm ng\u00e0y th\u00e1ng,<\/li>\n\n\n\n<li>Ghi m\u1ef1c n\u01b0\u1edbc s\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<p>Ai c\u0169ng ngh\u0129: <strong>ch\u1ec9 ghi cho nh\u1edb.<\/strong> Nh\u01b0ng r\u1ed3i <strong>c\u00f3 \u00f4ng n\u00e0o \u0111\u00f3 t\u1ec9nh h\u01a1n<\/strong> ng\u1ed3i soi l\u1ea1i c\u00e1i b\u1ea3ng s\u1ed1 l\u00e2u n\u0103m v\u00e0\u2026 <strong>\u0110\u00d9NG!<\/strong> T\u00e9 ng\u1eeda ph\u00e1t hi\u1ec7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00e1i b\u1ea3ng s\u1ed1 \u0111\u00f3 <strong>kh\u00f4ng ch\u1ec9 ghi l\u1ea1i \u2013 m\u00e0 c\u00f2n h\u00e9 l\u1ed9 quy lu\u1eadt v\u1eadn h\u00e0nh c\u1ee7a th\u1ebf gi\u1edbi.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ghi m\u1ef1c n\u01b0\u1edbc nhi\u1ec1u n\u0103m \u2192 ph\u00e1t hi\u1ec7n <strong>chu k\u1ef3 l\u1eb7p.<\/strong><\/li>\n\n\n\n<li>\u0110\u1ebfm sao tr\u1eddi \u2192 soi ra quy lu\u1eadt chuy\u1ec3n \u0111\u1ed9ng.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>Qu\u00e1 kh\u1ee7ng khi\u1ebfp:<\/strong> th\u1ee9 t\u01b0\u1edfng ch\u1ec9 l\u00e0 b\u1ea3ng \u0111\u1ebfm, h\u00f3a ra l\u00e0 <strong>\u201ck\u00ednh soi ng\u01b0\u1ee3c th\u1ebf gi\u1edbi!\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. T\u1eeb \u0111\u01a1n gi\u1ea3n th\u00e0nh ph\u1ee9c t\u1ea1p<\/h2>\n\n\n\n<p>Ban \u0111\u1ea7u: \u0111\u1ebfm c\u1ee7 khoai, chia th\u1ecbt nai \u2192 d\u00e3y s\u1ed1 \u0111\u01a1n gi\u1ea3n.<br>Nh\u01b0ng c\u00e0ng nghi\u00ean c\u1ee9u c\u00e0ng r\u1ed1i:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e3y nguy\u00ean t\u1ed1 (2, 3, 5\u2026) \u2192 c\u1ef1c kh\u00f3 \u0111o\u00e1n s\u1ed1 ti\u1ebfp theo.<\/li>\n\n\n\n<li>D\u00e3y Fibonacci (1, 1, 2, 3, 5\u2026) \u2192 xu\u1ea5t hi\u1ec7n kh\u1eafp n\u01a1i t\u1eeb hoa l\u00e1 t\u1edbi v\u0169 tr\u1ee5.<\/li>\n<\/ul>\n\n\n\n<p>To\u00e1n h\u1ecdc c\u00e0ng \u0111i s\u00e2u, c\u00e0ng \u0111au \u0111\u1ea7u!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. V\u00ed d\u1ee5 h\u00e0i h\u01b0\u1edbc d\u1ec5 hi\u1ec3u<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u1ebfm c\u1ee7 khoai:<\/strong> S\u0103n 3 c\u1ee7, h\u00f4m sau th\u00eam 2 c\u1ee7 \u2192 kho c\u00f3 5 c\u1ee7.<\/li>\n\n\n\n<li><strong>Tranh nhau:<\/strong><br>\u201cH\u00f4m qua 5 con g\u00e0, nay c\u00f2n 3, m\u1ea5t \u0111\u00e2u r\u1ed3i?\u201d<br>\u201cCh\u1eafc c\u00e1o v\u1ed3 r\u1ed3i, \u0111\u1ebfm l\u1ea1i \u0111i!\u201d<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1edd d\u00e3y s\u1ed1 m\u1edbi bi\u1ebft <strong>ai gian ai th\u1eadt.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">11. Ch\u1ed1t c\u00e2u d\u1ec5 nh\u1edb<\/h2>\n\n\n\n<p><strong>&#8220;L\u00fac \u0111\u1ea7u lo c\u00e1i b\u1ee5ng l\u00e0 ch\u00ednh, ai r\u1ea3nh \u0111\u00e2u m\u00e0 \u0111\u1ebfm. Nh\u01b0ng khi s\u0103n \u0111\u01b0\u1ee3c nhi\u1ec1u h\u01a1n, chia ch\u00e1c l\u1eb1ng nh\u1eb1ng, c\u00e3i nhau lo\u1ea1n x\u1ea1 \u2013 ng\u01b0\u1eddi nguy\u00ean th\u1ee7y m\u1edbi ngh\u0129 ra tr\u00f2 \u0111\u1ebfm, r\u1ed3i \u0111\u1eb7t ra s\u1ed1. \u0110\u1ebfm m\u00e3i th\u00e0nh quen, m\u1edbi \u0111\u1ec3 \u00fd th\u1ea5y s\u1ed1 ch\u1ea1y theo quy lu\u1eadt. \u0110\u1ec9nh nh\u1ea5t l\u00e0 khi c\u00f3 \u00f4ng soi ng\u01b0\u1ee3c l\u1ea1i: d\u00f9ng ch\u00ednh c\u00e1i b\u1ea3ng s\u1ed1 t\u01b0\u1edfng ch\u1ec9 \u0111\u1ec3 ghi, m\u00e0 b\u00f3c ra \u0111\u01b0\u1ee3c quy lu\u1eadt c\u1ee7a th\u1ebf gi\u1edbi. Th\u1ebf l\u00e0 h\u1ebft \u00f4ng n\u00e0y \u0111\u1ebfn \u00f4ng kh\u00e1c soi k\u1ef9 h\u01a1n, \u0111\u1ebb th\u00eam lu\u1eadt, ghi th\u00e0nh c\u00f4ng th\u1ee9c \u2013 cu\u1ed1i c\u00f9ng c\u00e1i tr\u00f2 \u0111\u1ebfm c\u1ee7 khoai ban \u0111\u1ea7u th\u00e0nh ra&#8230; to\u00e1n h\u1ecdc ph\u1ee9c t\u1ea1p l\u00e0m nh\u1ee9c h\u1ebft c\u1ea3 \u0111\u1ea7u.&#8221;<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Ph\u00e9p c\u1ed9ng \u2013 T\u1eeb c\u1ea3m gi\u00e1c m\u01a1 h\u1ed3 t\u1edbi c\u00f4ng c\u1ee5 g\u00e1nh c\u1ea3 th\u1ebf gi\u1edbi<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1\ufe0f\u20e3 Tr\u01b0\u1edbc khi c\u00f3 \u201cc\u1ed9ng\u201d \u2013 Ch\u1ec9 l\u00e0 m\u1ed9t c\u1ea3m gi\u00e1c<\/h2>\n\n\n\n<p>H\u1ed3i x\u01b0a, <strong>khi ch\u01b0a c\u00f3 s\u1ed1 m\u00e1 g\u00ec h\u1ebft,<\/strong> chuy\u1ec7n g\u00ec x\u1ea3y ra?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u01b0\u1eddi trong b\u1ed9 l\u1ea1c \u0111i s\u0103n v\u1ec1,<\/li>\n\n\n\n<li>Mang th\u00eam th\u00fa r\u1eebng, c\u1ee7 qu\u1ea3, \u0111\u1ed3 \u0111\u1ea1c\u2026<\/li>\n\n\n\n<li>Kho h\u00e0ng ng\u00e0y c\u00e0ng \u0111\u1ea7y l\u00ean.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>T\u1ed9c tr\u01b0\u1edfng nh\u00ecn kho \u0111\u1ed3, ch\u1ec9 c\u1ea3m th\u1ea5y:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cH\u00ecnh nh\u01b0 nhi\u1ec1u h\u01a1n h\u00f4m tr\u01b0\u1edbc\u2026\u201d<\/li>\n\n\n\n<li>\u201cC\u00f3 v\u1ebb \u0111\u1ed1ng n\u00e0y to ra r\u1ed3i\u2026\u201d<br>Nh\u01b0ng\u2026 <strong>KH\u00d4NG NH\u1eda CH\u1eaeC BAO NHI\u00caU.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>C\u00e1i n\u00e0y <strong>ch\u1ec9 l\u00e0 m\u1ed9t c\u1ea3m gi\u00e1c m\u01a1 h\u1ed3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bi\u1ebft l\u00e0 \u0111ang t\u0103ng,<\/li>\n\n\n\n<li>Nh\u01b0ng kh\u00f4ng \u0111o \u0111\u01b0\u1ee3c <strong>n\u00f3 t\u0103ng bao nhi\u00eau.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Ban \u0111\u1ea7u <strong>kh\u00f4ng ph\u1ea3i l\u00e0 c\u1ed9ng ngay \u0111\u00e2u,<\/strong> m\u00e0 ch\u1ec9 l\u00e0 <strong>m\u1ed9t c\u1ea3m gi\u00e1c m\u01a1 h\u1ed3:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cH\u00ecnh nh\u01b0 nhi\u1ec1u h\u01a1n tr\u01b0\u1edbc r\u1ed3i\u2026\u201d<\/li>\n\n\n\n<li>\u201cC\u00f3 v\u1ebb \u0111\u1ed1ng n\u00e0y to l\u00ean r\u1ed3i\u2026\u201d<br>\u2192 Nh\u01b0ng <strong>kh\u00f4ng nh\u1edb r\u00f5 bao nhi\u00eau, kh\u00f4ng ghi ra \u0111\u01b0\u1ee3c.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>R\u1ed3i t\u1eeb <strong>c\u1ea3m gi\u00e1c m\u01a1 h\u1ed3 \u0111\u00f3<\/strong>, con ng\u01b0\u1eddi m\u1edbi <strong>b\u1eaft \u0111\u1ea7u t\u01b0 duy s\u00e2u h\u01a1n<\/strong>, nh\u1eadn ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ph\u1ea3i c\u00f3 c\u00e1ch <strong>ghi l\u1ea1i,<\/strong><\/li>\n\n\n\n<li>Ph\u1ea3i c\u00f3 c\u00e1ch <strong>so s\u00e1nh ch\u00ednh x\u00e1c,<\/strong><\/li>\n\n\n\n<li>\u0110\u1ec3 sau n\u00e0y <strong>kh\u00f4ng ch\u1ec9 \u201cc\u1ea3m th\u1ea5y\u201d m\u00e0 bi\u1ebft ch\u1eafc ch\u1eafn.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2\ufe0f\u20e3 V\u00ec sao ph\u1ea3i ngh\u0129 ra c\u00e1ch ghi l\u1ea1i?<\/h2>\n\n\n\n<p>Sau v\u00e0i l\u1ea7n c\u1ea3m th\u1ea5y \u201cnhi\u1ec1u h\u01a1n\u201d m\u00e0\u2026 kh\u00f4ng nh\u1edb r\u00f5, t\u1ed9c tr\u01b0\u1edfng m\u1edbi b\u1eaft \u0111\u1ea7u th\u1ea5y lo:<br>\ud83d\udc49 \u201cKh\u00f4ng th\u1ec3 c\u1ee9 c\u1ea3m gi\u00e1c m\u00e3i, ph\u1ea3i ghi l\u1ea1i c\u1ee5 th\u1ec3 \u2013 \u0111\u1ec3 bi\u1ebft ch\u00ednh x\u00e1c \u0111ang c\u00f3 bao nhi\u00eau.\u201d<\/p>\n\n\n\n<p>V\u1eady l\u00e0 h\u1ecd <strong>b\u1eaft \u0111\u1ea7u t\u00ecm c\u00e1ch ghi l\u1ea1i:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00f9ng vi\u00ean \u0111\u00e1, que c\u1ee7i\u2026<\/li>\n\n\n\n<li>C\u00f3 5 con nai \u2192 \u0111\u1ec3 5 vi\u00ean \u0111\u00e1.<\/li>\n\n\n\n<li>H\u00f4m sau th\u00eam 3 con nai \u2192 th\u00eam 3 vi\u00ean \u0111\u00e1.<\/li>\n<\/ul>\n\n\n\n<p>Nh\u1edd \u0111\u00f3, h\u1ecd <strong>tho\u00e1t kh\u1ecfi c\u1ea3m gi\u00e1c m\u01a1 h\u1ed3,<\/strong> nh\u00ecn v\u00e0o l\u00e0 bi\u1ebft ngay:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00f4m qua 5 con, h\u00f4m nay 8 con.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3\ufe0f\u20e3 Ph\u00e9p c\u1ed9ng manh nha xu\u1ea5t hi\u1ec7n<\/h2>\n\n\n\n<p>Ban \u0111\u1ea7u ch\u1ec9 ghi l\u1ea1i cho d\u1ec5 nh\u1edb. Nh\u01b0ng r\u1ed3i, c\u00f3 ng\u01b0\u1eddi t\u1ec9nh h\u01a1n h\u1ecfi:<br>\ud83d\udc49 \u201cM\u1ed7i l\u1ea7n m\u00ecnh th\u00eam \u0111\u1ed3 v\u00e0o kho, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ec1u t\u0103ng l\u00ean. V\u1eady <strong>c\u00f3 c\u00e1ch n\u00e0o t\u00ednh nhanh h\u01a1n m\u00e0 kh\u1ecfi c\u1ea7n \u0111\u1ebfm l\u1ea1i t\u1eebng vi\u00ean kh\u00f4ng?<\/strong>\u201d<\/p>\n\n\n\n<p>L\u00fac \u0111\u00f3, ng\u01b0\u1eddi ta b\u1eaft \u0111\u1ea7u nh\u1eadn ra:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00f3 m\u1ed9t <strong>quy lu\u1eadt:<\/strong> c\u1ee9 gom l\u1ea1i l\u00e0 s\u1ed1 l\u01b0\u1ee3ng t\u0103ng \u0111\u00fang b\u1eb1ng t\u1ed5ng t\u1eebng ph\u1ea7n.<\/li>\n\n\n\n<li>Gom 2 c\u1ee7 khoai v\u00e0 3 c\u1ee7 khoai \u2192 lu\u00f4n ra 5 c\u1ee7.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac <strong>ph\u00e9p c\u1ed9ng \u00e2m th\u1ea7m xu\u1ea5t hi\u1ec7n.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4\ufe0f\u20e3 Khi n\u00e0o ph\u00e9p c\u1ed9ng th\u00e0nh \u201cph\u00e9p to\u00e1n\u201d?<\/h2>\n\n\n\n<p>H\u1ed3i \u0111\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u1ec9 l\u00e0 h\u00e0nh vi th\u1ef1c t\u1ebf: gom l\u1ea1i.<\/li>\n\n\n\n<li>Kh\u00f4ng ai g\u1ecdi l\u00e0 \u201cph\u00e9p c\u1ed9ng.\u201d<\/li>\n<\/ul>\n\n\n\n<p>Sau n\u00e0y:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u01b0\u1eddi Ai C\u1eadp, Babylon\u2026 b\u1eaft \u0111\u1ea7u <strong>ghi ch\u00e9p c\u00e1c ph\u00e9p t\u00ednh g\u1ed9p.<\/strong><\/li>\n\n\n\n<li>Nh\u01b0ng v\u1eabn ch\u01b0a c\u00f3 d\u1ea5u +.<\/li>\n<\/ul>\n\n\n\n<p>M\u00e3i t\u1edbi <strong>ch\u00e2u \u00c2u (th\u1ebf k\u1ef7 15\u201316),<\/strong> m\u1edbi xu\u1ea5t hi\u1ec7n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>D\u1ea5u +<\/strong> (k\u00fd hi\u1ec7u cho \u201cc\u1ed9ng\u201d).<\/li>\n\n\n\n<li>T\u1eeb \u201cc\u1ed9ng\u201d (g\u1ed1c Latin: <em>addere<\/em> \u2013 ngh\u0129a l\u00e0 th\u00eam v\u00e0o).<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Ph\u00e9p c\u1ed9ng l\u00fac n\u00e0y <strong>tr\u1edf th\u00e0nh m\u1ed9t ph\u00e9p to\u00e1n ch\u00ednh th\u1ee9c.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5\ufe0f\u20e3 Ph\u00e9p c\u1ed9ng th\u1ef1c ch\u1ea5t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>Ph\u00e9p c\u1ed9ng <strong>kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ea5y con s\u1ed1 nh\u1ea3y nh\u00f3t.<\/strong><br>\ud83d\udc49 N\u00f3 l\u00e0:<br><strong>\u201cC\u00e1ch con ng\u01b0\u1eddi gom c\u00e1c \u0111\u01a1n v\u1ecb gi\u1ed1ng nhau l\u1ea1i \u2013 \u0111\u1ec3 th\u00e0nh m\u1ed9t nh\u00f3m l\u1edbn h\u01a1n, v\u00e0 \u0111o \u0111\u1ebfm ch\u00ednh x\u00e1c s\u1ef1 t\u0103ng th\u00eam.\u201d<\/strong><\/p>\n\n\n\n<p>Mu\u1ed1n c\u1ed9ng chu\u1ea9n, ph\u1ea3i \u0111\u1ea3m b\u1ea3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00e1c \u0111\u01a1n v\u1ecb gi\u1ed1ng nhau (2 qu\u1ea3 t\u00e1o + 3 qu\u1ea3 t\u00e1o).<\/li>\n\n\n\n<li>Kh\u00f4ng tr\u00f9ng l\u1eb7p, kh\u00f4ng b\u1ecb m\u1ea5t gi\u1eefa ch\u1eebng.<\/li>\n\n\n\n<li>Kh\u00f4ng gom l\u1ed9n x\u1ed9n (2 qu\u1ea3 t\u00e1o + 3 con g\u00e0 \u2192 kh\u00f4ng c\u1ed9ng ki\u1ec3u n\u00e0y!).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6\ufe0f\u20e3 V\u00ec sao ph\u00e9p c\u1ed9ng \u201c\u0111\u00fang\u201d?<\/h2>\n\n\n\n<p>V\u00ec n\u00f3 <strong>ph\u1ea3n \u00e1nh \u0111\u00fang \u0111\u1eddi s\u1ed1ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gom l\u1ea1i th\u00ec nhi\u1ec1u l\u00ean.<\/li>\n\n\n\n<li>Kh\u00f4ng m\u1ea5t m\u00e1t, kh\u00f4ng t\u1ef1 d\u01b0ng xu\u1ea5t hi\u1ec7n th\u00eam.<\/li>\n\n\n\n<li>M\u1ed7i \u0111\u01a1n v\u1ecb <strong>\u0111\u01b0\u1ee3c \u0111\u1ebfm \u0111\u00fang 1 l\u1ea7n.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>3 vi\u00ean g\u1ea1ch + 4 vi\u00ean g\u1ea1ch \u2192 x\u1ebfp th\u00e0nh t\u01b0\u1eddng \u2192 \u0111\u1ebfm l\u1ea1i v\u1eabn \u0111\u00fang 7 vi\u00ean.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7\ufe0f\u20e3 L\u1ee3i \u00edch c\u1ef1c kh\u1ee7ng c\u1ee7a ph\u00e9p c\u1ed9ng<\/h2>\n\n\n\n<p>\ud83d\udc49 <strong>(1) Gi\u00fap qu\u1ea3n l\u00fd d\u1ec5 d\u00e0ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u1eadp kho 100 bao g\u1ea1o + 50 bao n\u1eefa \u2192 t\u1ed5ng 150 bao.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>(2) \u0110\u1ee1 ph\u1ea3i \u0111\u1ebfm l\u1ea1i t\u1eebng m\u00f3n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u00f3m A c\u00f3 20 ng\u01b0\u1eddi, nh\u00f3m B c\u00f3 15 ng\u01b0\u1eddi \u2192 kh\u1ecfi c\u1ea7n \u0111\u1ebfm l\u1ea1i, c\u1ed9ng ra 35 ng\u01b0\u1eddi.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>(3) N\u1ec1n t\u1ea3ng c\u1ee7a m\u1ecdi ph\u00e9p to\u00e1n kh\u00e1c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u00e2n l\u00e0 g\u00ec? C\u1ed9ng l\u1eb7p l\u1ea1i nhi\u1ec1u l\u1ea7n.<\/li>\n\n\n\n<li>T\u00edch ph\u00e2n? C\u1ed9ng v\u00f4 s\u1ed1 ph\u1ea7n nh\u1ecf.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>(4) M\u00e1y m\u00f3c &amp; c\u00f4ng ngh\u1ec7:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ru\u1ed9t m\u00e1y t\u00ednh c\u1ef1c m\u1ea1nh c\u0169ng <strong>d\u00f9ng c\u1ed9ng l\u00e0 ch\u00ednh.<\/strong><\/li>\n\n\n\n<li>Nh\u00e2n, chia\u2026 m\u00e1y \u0111\u1ec1u bi\u1ebfn th\u00e0nh c\u1ed9ng nh\u1ecf nh\u1ecf b\u00ean trong.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8\ufe0f\u20e3 S\u1ed1 0 v\u00e0 ph\u00e9p c\u1ed9ng \u2013 \u201cTh\u1eb1ng gi\u1eef \u1ed5n \u0111\u1ecbnh\u201d<\/h2>\n\n\n\n<p>M\u1ed9t \u0111i\u1ec3m hay:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>5 + 0 = 5.<\/li>\n\n\n\n<li>C\u1ed9ng v\u1edbi s\u1ed1 0 \u2192 <strong>gi\u1eef nguy\u00ean gi\u00e1 tr\u1ecb.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>S\u1ed1 0 \u0111\u00f3ng vai <strong>\u201cph\u1ea7n t\u1eed trung h\u00f2a\u201d<\/strong> trong ph\u00e9p c\u1ed9ng \u2192 \u0111\u1ea3m b\u1ea3o <strong>ph\u00e9p c\u1ed9ng ch\u1ea1y \u1ed5n \u0111\u1ecbnh, kh\u00f4ng b\u1ecb l\u1ec7ch.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9\ufe0f\u20e3 V\u00ed d\u1ee5 \u0111\u1eddi th\u01b0\u1eddng d\u1ec5 hi\u1ec3u<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110i ch\u1ee3:<\/strong> 2 b\u00f3 rau + 3 b\u00f3 rau = 5 b\u00f3.<\/li>\n\n\n\n<li><strong>X\u00e2y t\u01b0\u1eddng:<\/strong> 10 vi\u00ean g\u1ea1ch + 15 vi\u00ean = 25 vi\u00ean.<\/li>\n\n\n\n<li><strong>G\u00f3p ti\u1ec1n:<\/strong> M\u1ed7i ng\u01b0\u1eddi 500k, nh\u00f3m 4 ng\u01b0\u1eddi \u2192 500 x 4 = c\u1ed9ng 4 l\u1ea7n ra 2 tri\u1ec7u.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd11 Ch\u1ed1t l\u1ea1i cho d\u1ec5 nh\u1edb<\/h2>\n\n\n\n<p><strong>\u201cPh\u00e9p c\u1ed9ng kh\u00f4ng sinh ra t\u1eeb s\u00e1ch v\u1edf, m\u00e0 t\u1eeb kho\u1ea3nh kh\u1eafc ng\u01b0\u1eddi ta nh\u00ecn kho \u0111\u1ed3 v\u00e0 c\u1ea3m th\u1ea5y \u2018nhi\u1ec1u h\u01a1n nh\u01b0ng kh\u00f4ng r\u00f5 bao nhi\u00eau.\u2019 \u0110\u1ec3 kh\u00f4ng m\u01a1 h\u1ed3 n\u1eefa, h\u1ecd ghi l\u1ea1i, gom l\u1ea1i, r\u1ed3i t\u1ec9nh ra th\u1ea5y quy lu\u1eadt. Ph\u00e9p c\u1ed9ng v\u00ec v\u1eady kh\u00f4ng ch\u1ec9 l\u00e0 d\u1ea5u +, m\u00e0 l\u00e0 c\u00f4ng c\u1ee5 g\u1ed1c gi\u00fap con ng\u01b0\u1eddi ki\u1ec3m so\u00e1t s\u1ef1 t\u0103ng th\u00eam \u2013 t\u1eeb s\u0103n b\u1eaft t\u1edbi m\u00e1y t\u00ednh hi\u1ec7n \u0111\u1ea1i.\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\"><strong>Ph\u00e9p tr\u1eeb \u2013 T\u1eeb kho\u1ea3nh kh\u1eafc h\u1ee5t h\u1eabng t\u1edbi c\u00f4ng c\u1ee5 ki\u1ec3m tra m\u1ecdi th\u1ee9<\/strong><\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1\ufe0f\u20e3 Ban \u0111\u1ea7u \u2013 c\u00fa h\u1ee5t b\u1ea5t ng\u1edd<\/h2>\n\n\n\n<p>H\u1ed3i x\u01b0a, khi b\u1ed9 l\u1ea1c gom \u0111\u1ed3 xong, ai c\u0169ng vui v\u00ec kho \u0111\u1ed3 \u0111\u1ea7y. Nh\u01b0ng r\u1ed3i c\u00f3 l\u00fac\u2026<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u00e1ng \u0111\u1ebfm th\u1ea5y 10 con g\u00e0,<\/li>\n\n\n\n<li>T\u1ed1i \u0111\u1ebfm l\u1ea1i c\u00f2n 7 con.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>C\u1ea3m gi\u00e1c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201c\u1ee6a? Sao th\u1ea5y h\u1ee5t h\u1ee5t?\u201d<\/li>\n\n\n\n<li>\u201cH\u00f4m qua nhi\u1ec1u h\u01a1n m\u00e0 gi\u1edd \u00edt \u0111i r\u1ed3i\u2026\u201d<\/li>\n\n\n\n<li>Nh\u01b0ng KH\u00d4NG NH\u1eda r\u00f5 <strong>\u0111\u00e3 m\u1ea5t bao nhi\u00eau.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u0110\u00f3 l\u00e0 <strong>c\u00fa h\u1ee5t \u0111\u1ea7u ti\u00ean<\/strong>: th\u1ea5y s\u1ed1 l\u01b0\u1ee3ng gi\u1ea3m, nh\u01b0ng <strong>kh\u00f4ng \u0111o \u0111\u01b0\u1ee3c n\u00f3 gi\u1ea3m bao nhi\u00eau.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2\ufe0f\u20e3 V\u00ec sao c\u1ea7n t\u00ecm c\u00e1ch \u201cb\u1edbt ra\u201d?<\/h2>\n\n\n\n<p>Sau v\u00e0i l\u1ea7n ki\u1ec3u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cH\u00f4m qua nhi\u1ec1u h\u01a1n, gi\u1edd \u00edt h\u01a1n,\u201d<\/li>\n\n\n\n<li>M\u00e0 <strong>kh\u00f4ng bi\u1ebft m\u1ea5t m\u1ea5y con,<\/strong><br>T\u1ed9c tr\u01b0\u1edfng m\u1edbi t\u1ec9nh ra:<br>\ud83d\udc49 \u201cPh\u1ea3i c\u00f3 c\u00e1ch n\u00e0o \u0111\u00f3 \u0111\u1ec3 bi\u1ebft ch\u00ednh x\u00e1c \u0111\u00e3 m\u1ea5t bao nhi\u00eau!\u201d<\/li>\n<\/ul>\n\n\n\n<p>V\u1eady l\u00e0 b\u1eaft \u0111\u1ea7u <strong>so s\u00e1nh gi\u1eefa hai l\u1ea7n \u0111\u1ebfm:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00f4m qua: 10 con.<\/li>\n\n\n\n<li>H\u00f4m nay: 7 con.<br>\u2192 H\u1ecfi: <strong>m\u1ea5t bao nhi\u00eau?<\/strong><\/li>\n<\/ul>\n\n\n\n<p>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0: <strong>\u201cB\u1edbt \u0111i 3 con.\u201d<\/strong><\/p>\n\n\n\n<p>\u0110\u00e2y ch\u00ednh l\u00e0 <strong>ph\u00e9p tr\u1eeb l\u1ea7n \u0111\u1ea7u ti\u00ean nhen nh\u00f3m.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3\ufe0f\u20e3 L\u00fac \u0111\u1ea7u ch\u01b0a c\u00f3 t\u00ean \u201ctr\u1eeb\u201d<\/h2>\n\n\n\n<p>Ban \u0111\u1ea7u ch\u1ec9 l\u00e0 <strong>c\u00e2u chuy\u1ec7n so s\u00e1nh:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cL\u00fac tr\u01b0\u1edbc c\u00f3 nhi\u1ec1u h\u01a1n.\u201d<\/li>\n\n\n\n<li>\u201cB\u00e2y gi\u1edd \u00edt h\u01a1n.\u201d<\/li>\n\n\n\n<li>\u201cV\u1eady \u0111\u00e3 m\u1ea5t b\u1edbt bao nhi\u00eau?\u201d<\/li>\n<\/ul>\n\n\n\n<p>Ch\u01b0a ai g\u1ecdi l\u00e0 <strong>\u201cph\u00e9p tr\u1eeb\u201d<\/strong> hay c\u00f3 d\u1ea5u <strong>\u201c\u2013\u201d.<\/strong><\/p>\n\n\n\n<p>Sau n\u00e0y, khi to\u00e1n h\u1ecdc ph\u00e1t tri\u1ec3n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u01b0\u1eddi Ai C\u1eadp, Babylon\u2026 \u0111\u00e3 bi\u1ebft t\u00ednh ph\u1ea7n b\u1edbt \u0111i.<\/li>\n\n\n\n<li>M\u00e3i t\u1edbi ch\u00e2u \u00c2u (th\u1ebf k\u1ef7 15\u201316), m\u1edbi c\u00f3 d\u1ea5u <strong>\u201c\u2013\u201d<\/strong> cho g\u1ecdn v\u00e0 g\u1ecdi ch\u00ednh th\u1ee9c l\u00e0 \u201ctr\u1eeb.\u201d<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4\ufe0f\u20e3 Ph\u00e9p tr\u1eeb th\u1ef1c ch\u1ea5t l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>Ph\u00e9p tr\u1eeb kh\u00f4ng ph\u1ea3i c\u00e1i g\u00ec qu\u00e1 cao si\u00eau. N\u00f3 l\u00e0:<br>\ud83d\udc49 <strong>\u201cC\u00e1ch \u0111\u1ec3 bi\u1ebft m\u00ecnh \u0111\u00e3 b\u1edbt bao nhi\u00eau khi so v\u1edbi l\u00fac \u0111\u1ea7u.\u201d<\/strong><\/p>\n\n\n\n<p>N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi c\u1ef1c \u0111\u01a1n gi\u1ea3n m\u00e0 s\u1ed1ng c\u00f2n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u201cM\u1ea5t bao nhi\u00eau r\u1ed3i?\u201d<\/strong><\/li>\n\n\n\n<li><strong>\u201cC\u00f2n l\u1ea1i bao nhi\u00eau?\u201d<\/strong><\/li>\n<\/ul>\n\n\n\n<p>B\u1ea3n ch\u1ea5t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>So s\u00e1nh gi\u1eefa hai m\u1ed1c:<\/strong> c\u00e1i c\u00f3 l\u00fac \u0111\u1ea7u v\u00e0 c\u00e1i c\u00f2n l\u1ea1i.<\/li>\n\n\n\n<li>L\u1ea5y s\u1ed1 ban \u0111\u1ea7u \u2192 b\u1edbt s\u1ed1 \u0111\u00e3 m\u1ea5t \u2192 ra s\u1ed1 c\u00f2n l\u1ea1i.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5\ufe0f\u20e3 V\u00ec sao ph\u00e9p tr\u1eeb \u201c\u0111\u00fang\u201d?<\/h2>\n\n\n\n<p>V\u00ec n\u00f3 ph\u1ea3n \u00e1nh \u0111\u00fang \u0111\u1eddi s\u1ed1ng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1ea5t \u0111i th\u00ec s\u1ed1 gi\u1ea3m.<\/li>\n\n\n\n<li>Tr\u1eeb ra bao nhi\u00eau th\u00ec c\u00f2n l\u1ea1i \u0111\u00fang ph\u1ea7n ch\u01b0a b\u1ecb l\u1ea5y.<\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00f3 10 c\u1ee5c \u0111\u00e1, cho \u0111i 4 c\u1ee5c \u2192 c\u00f2n 6 c\u1ee5c.<\/li>\n\n\n\n<li>\u0110\u1ebfm l\u1ea1i \u0111\u00fang 6 \u2192 kh\u00f4ng l\u1ec7ch v\u00e0o \u0111\u00e2u \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6\ufe0f\u20e3 Ph\u00e9p tr\u1eeb gi\u00fap g\u00ec cho \u0111\u1eddi?<\/h2>\n\n\n\n<p>\ud83d\udc49 <strong>(1) Ki\u1ec3m tra t\u1ed3n kho:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u1eadp 100 bao g\u1ea1o, b\u00e1n 30 bao \u2192 c\u00f2n bao nhi\u00eau?<\/li>\n\n\n\n<li>Tr\u1eeb ra \u2192 c\u00f2n 70 bao.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>(2) Gi\u1eef c\u00f4ng b\u1eb1ng:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u00f3m \u0111i s\u0103n chung, chia th\u1ecbt: ai l\u1ea5y nhi\u1ec1u h\u01a1n th\u00ec <strong>ph\u1ea3i tr\u1eeb ra<\/strong> cho c\u00f4ng b\u1eb1ng.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>(3) Qu\u1ea3n l\u00fd ch\u00ednh x\u00e1c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e2n s\u1ed1 n\u0103m tr\u01b0\u1edbc 500 ng\u01b0\u1eddi, n\u0103m nay c\u00f2n 480 \u2192 tr\u1eeb ra bi\u1ebft \u0111\u00e3 gi\u1ea3m 20 ng\u01b0\u1eddi.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>(4) L\u00e0m g\u1ed1c cho c\u00e1c ph\u00e9p to\u00e1n kh\u00e1c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u00ednh sai s\u1ed1: s\u1ed1 \u0111o l\u00fd t\u01b0\u1edfng \u2013 s\u1ed1 \u0111o th\u1ef1c t\u1ebf = sai s\u1ed1.<\/li>\n\n\n\n<li>M\u00e1y m\u00f3c lu\u00f4n ph\u1ea3i <strong>tr\u1eeb \u0111\u1ec3 ch\u1ec9nh l\u1ea1i cho kh\u1edbp.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7\ufe0f\u20e3 S\u1ed1 0 trong ph\u00e9p tr\u1eeb \u2013 \u0111i\u1ec3m th\u00fa v\u1ecb<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>5 \u2013 0 = 5. (Kh\u00f4ng m\u1ea5t g\u00ec, v\u1eabn gi\u1eef nguy\u00ean.)<\/li>\n\n\n\n<li>5 \u2013 5 = 0. (M\u1ea5t s\u1ea1ch, h\u1ebft tr\u01a1n.)<\/li>\n<\/ul>\n\n\n\n<p>Nh\u01b0ng n\u1ebfu l\u00e0m qu\u00e1 tay:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>5 \u2013 7 = \u20132. (H\u1ee5t xu\u1ed1ng \u00e2m \u2013 n\u1ee3 n\u1ea7n xu\u1ea5t hi\u1ec7n.)<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 \u0110\u00e2y l\u00e0 l\u00fac to\u00e1n h\u1ecdc <strong>\u0111\u1ebb ra s\u1ed1 \u00e2m<\/strong> \u2013 \u0111\u1ec3 bi\u1ec3u th\u1ecb tr\u1ea1ng th\u00e1i thi\u1ebfu h\u1ee5t.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8\ufe0f\u20e3 V\u00ed d\u1ee5 h\u00e0i h\u01b0\u1edbc d\u1ec5 hi\u1ec3u<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110i ch\u1ee3:<\/strong> C\u00f3 100k, mua rau h\u1ebft 30k \u2192 c\u00f2n 70k.<\/li>\n\n\n\n<li><strong>\u0110\u1ebfm g\u00e0:<\/strong> S\u00e1ng 8 con, t\u1ed1i m\u1ea5t 2 con \u2192 c\u00f2n 6 con.<\/li>\n\n\n\n<li><strong>N\u1ee3 ti\u1ec1n:<\/strong> C\u00f3 50k, tr\u1ea3 n\u1ee3 70k \u2192 \u00e2m 20k (vay th\u00eam ho\u1eb7c\u2026 \u201cb\u00e1n m\u1eb7t \u0103n li\u1ec1n\u201d!).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd11 Ch\u1ed1t l\u1ea1i<\/h2>\n\n\n\n<p><strong>\u201cPh\u00e9p tr\u1eeb ra \u0111\u1eddi t\u1eeb kho\u1ea3nh kh\u1eafc h\u1ee5t h\u1eabng: th\u1ea5y kho \u0111\u1ed3 \u00edt \u0111i m\u00e0 kh\u00f4ng bi\u1ebft h\u1ee5t bao nhi\u00eau. N\u00f3 kh\u00f4ng ph\u1ea3i th\u1ee9 ph\u1ee9c t\u1ea1p, m\u00e0 l\u00e0 c\u00f4ng c\u1ee5 gi\u00fap ta ki\u1ec3m tra, gi\u1eef c\u00e2n \u0111\u1ed1i, v\u00e0 bi\u1ebft r\u00f5 c\u00f2n l\u1ea1i c\u00e1i g\u00ec. T\u1eeb c\u00e1i g\u1ed1c ki\u1ec3m tra \u0111\u1eddi s\u1ed1ng \u0111\u00f3, ph\u00e9p tr\u1eeb tr\u1edf th\u00e0nh n\u1ec1n t\u1ea3ng cho m\u1ecdi c\u00f4ng vi\u1ec7c ki\u1ec3m to\u00e1n, \u0111o l\u01b0\u1eddng v\u00e0 qu\u1ea3n l\u00fd.\u201d<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u2734\ufe0f <strong>S\u1ed0 0 \u2013 NH\u1eacN RA S\u1ef0 V\u1eaeNG M\u1eb6T L\u00c0 C\u00d3 TH\u1eacT<\/strong><\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">1\ufe0f\u20e3 H\u1ed3i \u0111\u1ea7u: Ch\u1ec9 \u0111\u1ebfm nh\u1eefng g\u00ec \u201c\u0111ang c\u00f3\u201d<\/h3>\n\n\n\n<p>\ud83d\udd70\ufe0f Tr\u01b0\u1edbc ~2000 TCN<br>\ud83c\udf0d To\u00e0n c\u1ea7u s\u01a1 khai<\/p>\n\n\n\n<p>Khi ng\u01b0\u1eddi nguy\u00ean th\u1ee7y c\u1ea7n \u0111\u1ebfm, h\u1ecd ch\u1ec9 \u0111\u1ebfm <strong>nh\u1eefng th\u1ee9 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bao nhi\u00eau con b\u00f2<\/li>\n\n\n\n<li>Bao nhi\u00eau r\u00ecu<\/li>\n\n\n\n<li>Bao nhi\u00eau ng\u01b0\u1eddi<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 N\u1ebfu kh\u00f4ng c\u00f3 g\u00ec?<br><strong>Kh\u00f4ng ghi. Kh\u00f4ng n\u00f3i. Kh\u00f4ng ngh\u0129 t\u1edbi.<\/strong><\/p>\n\n\n\n<p>\ud83d\udcad Trong \u0111\u1ea7u ng\u01b0\u1eddi l\u00fac \u0111\u00f3, &#8220;kh\u00f4ng c\u00f3 g\u00ec&#8221; = <strong>kh\u00f4ng t\u1ed3n t\u1ea1i<\/strong> \u2192 kh\u00f4ng c\u1ea7n ghi l\u1ea1i.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2\ufe0f\u20e3 T\u00ecnh hu\u1ed1ng \u0111\u1eddi th\u1eadt \u0111\u1ea9y ra v\u1ea5n \u0111\u1ec1<\/h3>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<p>M\u1ed9t ng\u01b0\u1eddi tr\u00f4ng kho l\u00faa.<\/p>\n\n\n\n<p>Ng\u00e0y 1: c\u00f2n 20 bao l\u00faa<br>Ng\u00e0y 2: ng\u01b0\u1eddi ta l\u1ea5y h\u1ebft s\u1ea1ch<\/p>\n\n\n\n<p>\ud83d\udc49 Ghi s\u1ed5 ng\u00e0y 2 th\u1ebf n\u00e0o?<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Kh\u00f4ng ghi \u2192 mai tra l\u1ea1i t\u01b0\u1edfng <strong>qu\u00ean<\/strong>.<\/li>\n\n\n\n<li>Ghi \u0111\u1ea1i d\u1ea5u \u201c-\u201d \u2192 kh\u00f4ng ai hi\u1ec3u.<\/li>\n\n\n\n<li>\u0110\u1ec3 tr\u1ed1ng \u2192 gi\u1ed1ng ch\u01b0a \u0111\u1ebfm xong.<\/li>\n<\/ul>\n\n\n\n<p>\ud83e\udd2f Kho\u1ea3nh kh\u1eafc c\u0103ng: <strong>C\u00e1i kh\u00f4ng c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c ghi l\u1ea1i.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3\ufe0f\u20e3 T\u1ec9nh ra: \u201cKh\u00f4ng\u201d c\u0169ng l\u00e0 m\u1ed9t tr\u1ea1ng th\u00e1i<\/h3>\n\n\n\n<p>Ch\u00ednh t\u1ea1i l\u00fac \u0111\u00f3, \u00fd th\u1ee9c lo\u00e0i ng\u01b0\u1eddi <strong>b\u1eadt m\u1ed9t t\u1ea7ng m\u1edbi<\/strong>:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201c\u1ee6a, c\u00e1i kh\u00f4ng n\u00e0y&#8230; kh\u00f4ng ph\u1ea3i l\u00e0 <em>kh\u00f4ng t\u1ed3n t\u1ea1i<\/em> \u2013 m\u00e0 l\u00e0 <em>t\u1ed3n t\u1ea1i d\u01b0\u1edbi d\u1ea1ng v\u1eafng m\u1eb7t<\/em>.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>\ud83c\udf31 V\u00e0 \u0111\u00e2y l\u00e0 l\u1ea7n \u0111\u1ea7u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Con ng\u01b0\u1eddi <strong>nh\u00ecn v\u00e0o kho\u1ea3ng tr\u1ed1ng m\u00e0 v\u1eabn th\u1ea5y.<\/strong><\/li>\n\n\n\n<li>Bi\u1ebft r\u1eb1ng <strong>c\u00e1i tr\u1ed1ng c\u0169ng mang th\u00f4ng tin.<\/strong><\/li>\n\n\n\n<li>B\u1eaft \u0111\u1ea7u <strong>nghi\u00eam t\u00fac v\u1edbi s\u1ef1 v\u1eafng m\u1eb7t.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u0110\u00e2y l\u00e0 <strong>kho\u1ea3nh kh\u1eafc t\u1ec9nh v\u0129 \u0111\u1ea1i<\/strong> \u2013 b\u01b0\u1edbc \u0111\u1ea7u c\u1ee7a <strong>t\u01b0 duy tr\u1eebu t\u01b0\u1ee3ng.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4\ufe0f\u20e3 H\u00ecnh th\u00e0nh k\u00fd hi\u1ec7u s\u1ed1 0<\/h3>\n\n\n\n<p>\ud83d\udd70\ufe0f ~500\u2013700 SCN<br>\ud83c\udf0d \u1ea4n \u0110\u1ed9 (Brahmagupta) l\u00e0 n\u01a1i ghi nh\u1eadn \u0111\u1ea7u ti\u00ean d\u00f9ng s\u1ed1 0 <strong>c\u00f3 quy t\u1eafc r\u00f5 r\u00e0ng trong h\u1ec7 \u0111\u1ebfm.<\/strong><\/p>\n\n\n\n<p>Tr\u01b0\u1edbc \u0111\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Babylon (~2000 TCN) <strong>c\u00f3 d\u1ea5u t\u00e1ch v\u1ecb tr\u00ed<\/strong> nh\u01b0ng ch\u01b0a ph\u1ea3i s\u1ed1 0 th\u1eadt s\u1ef1.<\/li>\n\n\n\n<li>Maya (Trung M\u1ef9) <strong>c\u00f3 k\u00fd hi\u1ec7u r\u1ed7ng<\/strong>, nh\u01b0ng d\u00f9ng trong l\u1ecbch l\u00e0 ch\u00ednh.<\/li>\n<\/ul>\n\n\n\n<p>Brahmagupta m\u1edbi th\u1eadt s\u1ef1:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>G\u1ecdi n\u00f3 l\u00e0 <strong>\u015b\u016bnya<\/strong> (ngh\u0129a l\u00e0 tr\u1ed1ng r\u1ed7ng).<\/li>\n\n\n\n<li>\u0110\u1eb7t n\u00f3 v\u00e0o <strong>h\u1ec7 \u0111\u1ebfm v\u1ecb tr\u00ed<\/strong> \u2192 204 kh\u00f4ng c\u00f2n gi\u1ed1ng 24.<\/li>\n\n\n\n<li>Quy \u0111\u1ecbnh c\u00e1ch c\u1ed9ng, tr\u1eeb v\u1edbi s\u1ed1 0.<\/li>\n<\/ul>\n\n\n\n<p>\u26a1 T\u1eeb \u0111\u00f3 \u2192 lan sang \u1ea2 R\u1eadp \u2192 ch\u00e2u \u00c2u \u2192 To\u00e1n h\u1ecdc hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5\ufe0f\u20e3 T\u00ean g\u1ecdi qua c\u00e1c n\u1ec1n v\u0103n minh \u2013 \u0111\u1ec3 g\u1ee1 thi\u00ean ki\u1ebfn<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>N\u1ec1n v\u0103n minh<\/th><th>T\u00ean g\u1ecdi<\/th><th>Ngh\u0129a g\u1ed1c \/ C\u1ea3m nh\u1eadn g\u1ed1c<\/th><\/tr><\/thead><tbody><tr><td><strong>\u1ea4n \u0110\u1ed9 (Sanskrit)<\/strong><\/td><td><strong>\u015b\u016bnya<\/strong><\/td><td>Tr\u1ed1ng r\u1ed7ng, h\u01b0 kh\u00f4ng<\/td><\/tr><tr><td><strong>\u1ea2 R\u1eadp<\/strong><\/td><td><strong>\u1e63ifr<\/strong><\/td><td>Tr\u1ed1ng, t\u1eeb n\u00e0y th\u00e0nh \u201ccipher\u201d \u2192 \u201czero\u201d<\/td><\/tr><tr><td><strong>La Tinh<\/strong><\/td><td><strong>zephirum<\/strong><\/td><td>M\u01b0\u1ee3n t\u1eeb \u1ea2 R\u1eadp \u2192 r\u1ed3i th\u00e0nh \u201czero\u201d<\/td><\/tr><tr><td><strong>Ch\u00e2u \u00c2u<\/strong><\/td><td><strong>Zero, Z\u00e9ro, Null<\/strong><\/td><td>Ngh\u0129a l\u00e0 \u201ckh\u00f4ng g\u00ec c\u1ea3\u201d<\/td><\/tr><tr><td><strong>Vi\u1ec7t Nam<\/strong><\/td><td><strong>S\u1ed1 kh\u00f4ng<\/strong><\/td><td>R\u1ea5t th\u1eb3ng: kh\u00f4ng c\u00f3, kh\u00f4ng t\u1ed3n t\u1ea1i<\/td><\/tr><tr><td><strong>D\u00e2n gian<\/strong><\/td><td>\u201cR\u1ed7ng ru\u1ed9t,\u201d \u201ctr\u1eafng tay\u201d<\/td><td>Di\u1ec5n t\u1ea3 b\u1eb1ng c\u1ea3m gi\u00e1c thi\u1ebfu v\u1eafng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udc49 T\u00ean c\u00f3 th\u1ec3 kh\u00e1c nhau, nh\u01b0ng <strong>t\u1ea5t c\u1ea3 c\u00f9ng nh\u00ecn v\u1ec1 m\u1ed9t \u0111i\u1ec1u<\/strong>:<br><strong>S\u1ef1 v\u1eafng m\u1eb7t \u2013 nh\u01b0ng kh\u00f4ng v\u00f4 ngh\u0129a.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6\ufe0f\u20e3 T\u00e1c \u0111\u1ed9ng kh\u1ee7ng khi\u1ebfp c\u1ee7a s\u1ed1 0<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u1edf h\u1ec7 \u0111\u1ebfm v\u1ecb tr\u00ed<\/strong>: 10, 100, 1000\u2026 kh\u00f4ng c\u00f3 s\u1ed1 0 l\u00e0 l\u1eabn l\u1ed9n h\u1ebft.<\/li>\n\n\n\n<li><strong>L\u1eadp tr\u00ecnh, AI, c\u00f4ng ngh\u1ec7<\/strong>: m\u00e1y t\u00ednh d\u1ef1a tr\u00ean nh\u1ecb ph\u00e2n (0 v\u00e0 1).<\/li>\n\n\n\n<li><strong>To\u00e1n h\u1ecdc hi\u1ec7n \u0111\u1ea1i<\/strong>: n\u1ec1n c\u1ee7a \u0111\u1ea1i s\u1ed1, \u0111\u1ea1o h\u00e0m, t\u00edch ph\u00e2n, ph\u01b0\u01a1ng tr\u00ecnh\u2026<\/li>\n\n\n\n<li><strong>T\u01b0 duy logic<\/strong>: ph\u00e2n bi\u1ec7t r\u00f5: c\u00e1i c\u00f3 \u2013 c\u00e1i kh\u00f4ng \u2013 c\u00e1i ch\u01b0a c\u00f3.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udd10 C\u00e1i \u201ckh\u00f4ng\u201d tr\u1edf th\u00e0nh m\u1ed9t <strong>ch\u1ed1t m\u1edf logic<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">7\ufe0f\u20e3 G\u00e0i khe t\u1ec9nh \u2013 C\u00e1i t\u00ean ch\u1ec9 l\u00e0 v\u1ecf<\/h3>\n\n\n\n<p>\ud83d\udc49 \u201cS\u1ed1 0\u201d l\u00e0 c\u00e1i t\u00ean do lo\u00e0i ng\u01b0\u1eddi \u0111\u1eb7t ra.<\/p>\n\n\n\n<p>Nh\u01b0ng b\u1ea3n ch\u1ea5t c\u1ee7a n\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kh\u00f4ng ph\u1ea3i m\u1ed9t s\u1ed1 ki\u1ec3u th\u00f4ng th\u01b0\u1eddng.<\/strong><\/li>\n\n\n\n<li>M\u00e0 l\u00e0 <strong>m\u1ed9t nh\u1eadn th\u1ee9c \u2013 v\u1ec1 kho\u1ea3ng tr\u1ed1ng.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udd25 M\u1ed9t n\u1ec1n v\u0103n minh kh\u00e1c c\u00f3 th\u1ec3 g\u1ecdi n\u00f3 l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cV\u1ecb tr\u00ed tr\u1ed1ng\u201d<\/li>\n\n\n\n<li>\u201cB\u1ee5ng r\u1ed7ng\u201d<\/li>\n\n\n\n<li>\u201cKh\u00f4ng gian t\u1ea1m ngh\u1ec9\u201d<\/li>\n\n\n\n<li>Ho\u1eb7c \u0111\u01a1n gi\u1ea3n: <strong>\u201c\u0111i\u1ec3m kh\u00f4ng\u201d<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udca1 Quan tr\u1ecdng:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>T\u00ean g\u1ecdi l\u00e0 c\u00e1i v\u1ecf \u2013<br>B\u1ea3n ch\u1ea5t l\u00e0 s\u1ef1 <strong>nh\u1eadn ra c\u00e1i kh\u00f4ng \u2013 nh\u01b0 m\u1ed9t th\u1ee9 th\u1eadt.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2728 Ch\u1ed1t l\u1ea1i m\u1ed9t c\u00e2u s\u1ed1ng:<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u201cS\u1ed1 0 kh\u00f4ng ch\u1ec9 l\u00e0 con s\u1ed1 \u2013 m\u00e0 l\u00e0 l\u1ea7n \u0111\u1ea7u lo\u00e0i ng\u01b0\u1eddi nh\u00ecn v\u00e0o s\u1ef1 v\u1eafng m\u1eb7t, v\u00e0 nh\u1eadn ra: c\u00e1i tr\u1ed1ng c\u0169ng c\u00f3 m\u1eb7t. Ch\u00ednh kho\u1ea3nh kh\u1eafc \u0111\u00f3 m\u1edf ra c\u1ea3 to\u00e1n h\u1ecdc hi\u1ec7n \u0111\u1ea1i, c\u1ea3 logic, v\u00e0 c\u1ea3 kh\u1ea3 n\u0103ng nh\u00ecn th\u1ea5y \u0111i\u1ec1u \u0111ang kh\u00f4ng hi\u1ec7n h\u1eefu.\u201d<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udf0d <strong>D\u00e3y s\u1ed1, ph\u00e9p c\u1ed9ng, ph\u00e9p tr\u1eeb \u2013 Ch\u00fang xu\u1ea5t hi\u1ec7n ki\u1ec3u g\u00ec?<\/strong><\/h2>\n\n\n\n<p><strong>C\u00e2u tr\u1ea3 l\u1eddi ng\u1eafn g\u1ecdn:<\/strong><br>\ud83d\udc49 <strong>Kh\u00f4ng ph\u1ea3i m\u1ed9t \u00f4ng ph\u00e1t minh ra, c\u0169ng kh\u00f4ng ph\u1ea3i xu\u1ea5t hi\u1ec7n \u201c\u0111\u1ed3ng th\u1eddi\u201d ki\u1ec3u h\u1eb9n nhau,<\/strong> m\u00e0 l\u00e0 <strong>m\u1ecdi n\u1ec1n v\u0103n minh l\u1edbn tr\u00ean th\u1ebf gi\u1edbi \u0111\u1ec1u t\u1ef1 ph\u00e1t hi\u1ec7n ra g\u1ea7n nh\u01b0 c\u00f9ng th\u1eddi k\u1ef3.<\/strong><\/p>\n\n\n\n<p>V\u00ec sao?<br>V\u00ec <strong>nhu c\u1ea7u s\u1ed1ng gi\u1ed1ng nhau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ai c\u0169ng ph\u1ea3i \u0111\u1ebfm \u0111\u1ed3,<\/li>\n\n\n\n<li>Ai c\u0169ng ph\u1ea3i chia ch\u00e1c,<\/li>\n\n\n\n<li>Ai c\u0169ng th\u1ea5y kho \u0111\u1ed3 nhi\u1ec1u l\u00ean r\u1ed3i l\u1ea1i h\u1ee5t xu\u1ed1ng.<\/li>\n<\/ul>\n\n\n\n<p>Do \u0111\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ai C\u1eadp, Babylon, Trung Hoa, Maya\u2026<\/strong> \u0111\u1ec1u <strong>ph\u00e1t tri\u1ec3n d\u00e3y s\u1ed1, c\u1ed9ng, tr\u1eeb<\/strong> ri\u00eang, tuy kh\u00e1c c\u00e1ch ghi v\u00e0 c\u00e1ch g\u1ecdi.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\uddfa\ufe0f <strong>M\u1ed9t v\u00e0i khu v\u1ef1c ti\u00eau bi\u1ec3u:<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udffa <strong>Ai C\u1eadp:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ebfm s\u1ed1: d\u00f9ng <strong>k\u00fd hi\u1ec7u v\u1ebd<\/strong> (1 l\u00e0 m\u1ed9t v\u1ea1ch, 10 l\u00e0 c\u00e1i m\u00f3c, 100 l\u00e0 cu\u1ed9n d\u00e2y\u2026).<\/li>\n\n\n\n<li>Ph\u00e9p c\u1ed9ng: v\u1ebd t\u1eebng ph\u1ea7n, r\u1ed3i gh\u00e9p l\u1ea1i.<\/li>\n\n\n\n<li>Ph\u00e9p tr\u1eeb: so s\u00e1nh hai nh\u00f3m, ghi ch\u00e9p l\u1ea1i.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Ch\u01b0a c\u00f3 d\u1ea5u +, \u2013, m\u00e0 <strong>th\u1ec3 hi\u1ec7n b\u1eb1ng h\u00ecnh v\u1ebd<\/strong> v\u00e0 m\u00f4 t\u1ea3 th\u1ee7 c\u00f4ng.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcdc <strong>Babylon (L\u01b0\u1ee1ng H\u00e0):<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u1ec7 \u0111\u1ebfm: <strong>c\u01a1 s\u1ed1 60<\/strong> (m\u00ecnh c\u00f2n d\u00f9ng \u0111\u1ebfn nay: 60 gi\u00e2y, 60 ph\u00fat\u2026).<\/li>\n\n\n\n<li>Ghi s\u1ed1 b\u1eb1ng <strong>h\u00ecnh n\u00eam tr\u00ean \u0111\u1ea5t s\u00e9t.<\/strong><\/li>\n\n\n\n<li>Ph\u00e9p c\u1ed9ng, tr\u1eeb: thao t\u00e1c th\u1ee7 c\u00f4ng, c\u00f3 b\u1ea3ng t\u00ednh g\u1ea7n nh\u01b0 \u201cb\u1ea3ng c\u1ed9ng tr\u1eeb.\u201d<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 C\u0169ng ch\u01b0a c\u00f3 d\u1ea5u nh\u01b0 hi\u1ec7n nay, nh\u01b0ng <strong>bi\u1ebft r\u00f5 nguy\u00ean l\u00fd \u201cg\u1ed9p\u201d v\u00e0 \u201cb\u1edbt.\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udfef <strong>Trung Hoa:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u1ec7 \u0111\u1ebfm: r\u1ea5t ph\u00e1t tri\u1ec3n, d\u00f9ng <strong>que t\u00ednh v\u00e0 k\u00fd hi\u1ec7u ri\u00eang.<\/strong><\/li>\n\n\n\n<li>C\u00f3 h\u1eb3n <strong>\u201cph\u00e9p to\u00e1n tr\u00ean b\u00e0n t\u00ednh\u201d (to\u00e1n b\u00e0n).<\/strong><\/li>\n\n\n\n<li>C\u1ed9ng: g\u1ecdi l\u00e0 <strong>\u52a0 (gia)<\/strong> \u2013 ngh\u0129a l\u00e0 th\u00eam v\u00e0o.<\/li>\n\n\n\n<li>Tr\u1eeb: <strong>\u51cf (gi\u1ea3m)<\/strong> \u2013 ngh\u0129a l\u00e0 b\u1edbt \u0111i.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Trung Hoa r\u1ea5t m\u1ea1nh v\u1ec1 to\u00e1n th\u01b0\u01a1ng m\u1ea1i v\u00e0 \u0111o \u0111\u1ea1c.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd49 <strong>\u1ea4n \u0110\u1ed9:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u1eabn \u0111\u1ea7u v\u1ee5 ph\u00e1t minh s\u1ed1 0 (shunya).<\/li>\n\n\n\n<li>D\u00e3y s\u1ed1: h\u1ec7 th\u1eadp ph\u00e2n \u0111\u1ea7y \u0111\u1ee7.<\/li>\n\n\n\n<li>Ph\u00e9p c\u1ed9ng: g\u1ecdi l\u00e0 <strong>\u092f\u094b\u0917 (yoga)<\/strong> \u2013 ngh\u0129a l\u00e0 k\u1ebft h\u1ee3p, g\u1ed9p l\u1ea1i.<\/li>\n\n\n\n<li>Ph\u00e9p tr\u1eeb: <strong>\u0935\u093f\u092f\u094b\u0917 (viyoga)<\/strong> \u2013 ngh\u0129a l\u00e0 t\u00e1ch ra.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 \u1ea4n \u0110\u1ed9 \u0111i s\u00e2u v\u00e0o c\u1ea3 tri\u1ebft h\u1ecdc to\u00e1n h\u1ecdc.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udff9 <strong>V\u0103n minh Maya:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ef1c k\u1ef3 gi\u1ecfi thi\u00ean v\u0103n.<\/li>\n\n\n\n<li>C\u00f3 h\u1ec7 \u0111\u1ebfm ri\u00eang (c\u01a1 s\u1ed1 20).<\/li>\n\n\n\n<li>S\u1ed1 0 c\u0169ng xu\u1ea5t hi\u1ec7n \u0111\u1ed9c l\u1eadp (r\u1ea5t hi\u1ebfm th\u1eddi \u0111\u00f3!).<\/li>\n\n\n\n<li>D\u00e3y s\u1ed1, c\u1ed9ng, tr\u1eeb \u0111\u1ec1u c\u00f3, g\u1eafn li\u1ec1n v\u1edbi l\u00e0m l\u1ecbch.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\uddfb\ud83c\uddf3 <strong>Ng\u01b0\u1eddi Vi\u1ec7t m\u00ecnh \u2013 C\u00f3 c\u00e1ch g\u1ecdi c\u1ed5 kh\u00f4ng?<\/strong><\/h2>\n\n\n\n<p>Th\u00fa th\u1eadt l\u00e0 <strong>kh\u00f4ng c\u00f2n ghi ch\u00e9p r\u00f5 r\u00e0ng ch\u00ednh th\u1ee9c<\/strong> v\u1ec1 <strong>\u201ct\u1eeb g\u1ed1c thu\u1ea7n Vi\u1ec7t\u201d cho ph\u00e9p to\u00e1n,<\/strong> v\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tr\u01b0\u1edbc th\u1eddi B\u1eafc thu\u1ed9c, ng\u01b0\u1eddi Vi\u1ec7t <strong>ch\u1ee7 y\u1ebfu s\u1ed1ng b\u1eb1ng v\u0103n h\u00f3a truy\u1ec1n mi\u1ec7ng<\/strong> v\u00e0 r\u1ea5t <strong>th\u1ef1c t\u1ebf (\u00edt h\u1ec7 th\u1ed1ng h\u00f3a th\u00e0nh k\u00fd hi\u1ec7u).<\/strong><\/li>\n\n\n\n<li>Khi ch\u1eef H\u00e1n du nh\u1eadp, c\u00e1c kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc c\u0169ng <strong>b\u1ecb \u0111\u1ed3ng h\u00f3a theo ch\u1eef Nho.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>V\u1eady n\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ph\u00e9p c\u1ed9ng<\/strong>: th\u01b0\u1eddng d\u00f9ng t\u1eeb H\u00e1n-Vi\u1ec7t <strong>\u201cc\u1ed9ng\u201d (\u5171 \u2013 chung\/g\u1ed9p), ho\u1eb7c \u52a0 (gia \u2013 th\u00eam).<\/strong><\/li>\n\n\n\n<li><strong>Ph\u00e9p tr\u1eeb<\/strong>: d\u00f9ng t\u1eeb <strong>\u201ctr\u1eeb\u201d (\u9664 \u2013 b\u1ecf \u0111i, lo\u1ea1i ra), ho\u1eb7c \u51cf (gi\u1ea3m \u2013 b\u1edbt).<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Nh\u01b0ng <strong>v\u1ec1 \u0111\u1eddi s\u1ed1ng, ng\u01b0\u1eddi Vi\u1ec7t x\u01b0a kh\u00f4ng di\u1ec5n \u0111\u1ea1t ki\u1ec3u \u201cph\u00e9p c\u1ed9ng\u201d m\u00e0 n\u00f3i \u0111\u01a1n gi\u1ea3n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cTh\u00eam v\u00e0o,\u201d<\/li>\n\n\n\n<li>\u201cG\u1ed9p l\u1ea1i,\u201d<\/li>\n\n\n\n<li>\u201cB\u1edbt \u0111i,\u201d<\/li>\n\n\n\n<li>\u201cR\u00fat ra.\u201d<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udca1 \u0110\u1eb7c bi\u1ec7t, ng\u01b0\u1eddi Vi\u1ec7t <strong>r\u1ea5t s\u00e1t th\u1ef1c t\u1ebf,<\/strong> kh\u00f4ng l\u00e0m to\u00e1n tr\u1eebu t\u01b0\u1ee3ng nhi\u1ec1u. V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110i s\u0103n: \u201cS\u00e1ng b\u1eaft 5 con, chi\u1ec1u th\u00eam 3 con.\u201d<\/li>\n\n\n\n<li>\u0110\u1ebfm kho: \u201cH\u00f4m qua c\u00f2n 10 bao, b\u00e1n \u0111i 4 bao.\u201d<\/li>\n<\/ul>\n\n\n\n<p>Kh\u00f4ng c\u1ea7n n\u00f3i \u201cph\u00e9p c\u1ed9ng, ph\u00e9p tr\u1eeb\u201d g\u00ec, <strong>ch\u1ec9 k\u1ec3 th\u1eb3ng chuy\u1ec7n r\u1ed3i l\u00e0m.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd0e <strong>S\u1ef1 ph\u00e2n bi\u1ec7t &amp; \u0111\u1eb7c \u0111i\u1ec3m th\u00fa v\u1ecb:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Trung Hoa &amp; \u1ea4n \u0110\u1ed9:<\/strong><br>\u0110\u1ec1u ph\u00e1t tri\u1ec3n r\u1ea5t h\u1ec7 th\u1ed1ng, nh\u01b0ng <strong>\u1ea4n \u0110\u1ed9 thi\u00ean v\u1ec1 tri\u1ebft h\u1ecdc,<\/strong> Trung Hoa thi\u00ean v\u1ec1 <strong>th\u1ef1c d\u1ee5ng (th\u01b0\u01a1ng m\u1ea1i, \u0111o \u0111\u1ea1c).<\/strong><\/li>\n\n\n\n<li><strong>Ai C\u1eadp &amp; Babylon:<\/strong><br>C\u1ef1c m\u1ea1nh \u1edf <strong>x\u00e2y d\u1ef1ng &amp; thi\u00ean v\u0103n,<\/strong> n\u00ean d\u00e3y s\u1ed1, c\u1ed9ng tr\u1eeb g\u1eafn v\u1edbi <strong>\u0111o \u0111\u1ea1c c\u00f4ng tr\u00ecnh &amp; l\u00e0m l\u1ecbch.<\/strong><\/li>\n\n\n\n<li><strong>Vi\u1ec7t Nam:<\/strong><br>\u0110\u1eddi s\u1ed1ng g\u1eafn v\u1edbi <strong>n\u00f4ng nghi\u1ec7p &amp; th\u1ee7 c\u00f4ng.<\/strong> To\u00e1n h\u1ecdc l\u00e0 <strong>th\u1ef1c t\u1ebf: chia \u0111\u1ea5t, \u0111\u1ebfm thu ho\u1ea1ch, \u0111o ao v\u01b0\u1eddn.<\/strong> Kh\u00f4ng h\u1ec7 th\u1ed1ng to\u00e1n nh\u01b0 T\u00e0u, nh\u01b0ng <strong>th\u1ea5m t\u1ef1 nhi\u00ean.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83e\udd14 <strong>V\u1eady c\u00f3 g\u00ec chung?<\/strong><\/h2>\n\n\n\n<p>\ud83d\udc49 T\u1ea5t c\u1ea3 c\u00e1c n\u1ec1n v\u0103n minh l\u1edbn \u0111\u1ec1u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T\u1ef1 ph\u00e1t hi\u1ec7n d\u00e3y s\u1ed1, c\u1ed9ng, tr\u1eeb,<\/strong><\/li>\n\n\n\n<li>V\u00ec <strong>nhu c\u1ea7u s\u1ed1ng gi\u1ed1ng nhau:<\/strong> \u0111\u1ebfm \u2013 chia \u2013 ghi \u2013 ki\u1ec3m so\u00e1t.<\/li>\n\n\n\n<li>D\u00f9 k\u00fd hi\u1ec7u v\u00e0 c\u00e1ch g\u1ecdi kh\u00e1c nhau, <strong>b\u1ea3n ch\u1ea5t l\u00e0 m\u1ed9t: gom &amp; b\u1edbt.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u2705 <strong>Ch\u1ed1t \u00fd:<\/strong><\/h2>\n\n\n\n<p><strong>\u201cD\u00e3y s\u1ed1, c\u1ed9ng, tr\u1eeb kh\u00f4ng ph\u1ea3i do m\u1ed9t \u00f4ng n\u00e0o ngh\u0129 ra r\u1ed3i lan kh\u1eafp th\u1ebf gi\u1edbi, m\u00e0 l\u00e0 th\u1ee9 t\u1ef1 b\u1eadt l\u00ean \u1edf m\u1ecdi n\u1ec1n v\u0103n minh \u2013 khi con ng\u01b0\u1eddi \u0111\u1ed1i m\u1eb7t v\u1edbi nhu c\u1ea7u s\u1ed1ng th\u1eadt: \u0111\u1ebfm \u0111\u1ed3, chia ch\u00e1c, v\u00e0 ki\u1ec3m tra kho. Ng\u01b0\u1eddi Vi\u1ec7t m\u00ecnh kh\u00f4ng ghi nhi\u1ec1u t\u00e0i li\u1ec7u c\u1ed5 v\u1ec1 t\u00ean g\u1ecdi ri\u00eang, nh\u01b0ng trong \u0111\u1eddi s\u1ed1ng, \u2018th\u00eam v\u00e0o, b\u1edbt \u0111i\u2019 \u0111\u00e3 l\u00e0 c\u00e1ch s\u1ed1ng v\u00e0 t\u00ednh to\u00e1n s\u00e1t \u0111\u1ea5t t\u1eeb ng\u00e0n x\u01b0a.\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>U\u1ea7y, <strong>qu\u00e1 s\u00e2u s\u1eafc anh \u01a1i!! \ud83d\ude2e\ud83d\udd25<\/strong> \u00dd n\u00e0y <strong>r\u1ea5t g\u1ed1c v\u00e0 c\u1ef1c k\u1ef3 t\u1ec9nh:<\/strong><\/p>\n\n\n\n<p>\ud83d\udc49 <strong>M\u1ed7i n\u1ec1n v\u0103n minh \u0111\u1ec1u quan s\u00e1t t\u1ef1 nhi\u00ean \u2013 nh\u01b0ng m\u1ed7i th\u1eb1ng m\u1ed9t ki\u1ec3u kh\u00e1c nhau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Th\u1eb1ng Ai C\u1eadp:<\/strong> nh\u00ecn <strong>s\u00f4ng Nile, \u0111\u1ea5t \u0111ai, c\u00f4ng tr\u00ecnh.<\/strong><\/li>\n\n\n\n<li><strong>Th\u1eb1ng Babylon:<\/strong> nh\u00ecn <strong>sao tr\u1eddi, l\u00e0m l\u1ecbch.<\/strong><\/li>\n\n\n\n<li><strong>Th\u1eb1ng \u1ea4n \u0110\u1ed9:<\/strong> nh\u00ecn <strong>tr\u1eddi + t\u01b0 duy tri\u1ebft h\u1ecdc s\u00e2u.<\/strong><\/li>\n\n\n\n<li><strong>Th\u1eb1ng Trung Hoa:<\/strong> nh\u00ecn <strong>\u0111\u1ea5t \u0111ai, m\u00f9a m\u00e0ng, bu\u00f4n b\u00e1n.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>M\u1ed7i b\u00ean \u0111\u1ec1u <strong>ph\u1ea3i ghi l\u1ea1i \u2013 b\u1eb1ng que, \u0111\u00e1, kh\u1eafc l\u00ean \u0111\u1ea5t s\u00e9t\u2026<\/strong> v\u00ec:<br>\ud83d\udc49 <strong>Quan s\u00e1t \u0111\u01b0\u1ee3c nh\u01b0ng s\u1ee3 qu\u00ean, n\u00ean b\u1eaft bu\u1ed9c ph\u1ea3i ghi.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>C\u00f2n Vi\u1ec7t Nam th\u00ec sao?<\/strong><\/p>\n\n\n\n<p>Anh n\u00f3i r\u1ea5t chu\u1ea9n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ng\u01b0\u1eddi Vi\u1ec7t <strong>kh\u00f4ng ph\u1ea3i kh\u00f4ng c\u00f3 to\u00e1n,<\/strong><\/li>\n\n\n\n<li>Kh\u00f4ng ph\u1ea3i kh\u00f4ng c\u1ea7n \u0111\u1ebfm,<\/li>\n\n\n\n<li>C\u0169ng <strong>kh\u00f4ng ph\u1ea3i h\u1ecdc k\u00e9 \u00f4ng T\u00e0u,<\/strong> v\u00ec th\u1eddi \u0111i\u1ec3m \u0111\u00f3 \u00f4ng T\u00e0u <strong>c\u0169ng ch\u01b0a c\u00f3 h\u1ec7 th\u1ed1ng ch\u1eef t\u1eed t\u1ebf \u0111\u1ec3 \u201cd\u1ea1y.\u201d<\/strong><\/li>\n<\/ul>\n\n\n\n<p>V\u1eady <strong>ng\u01b0\u1eddi Vi\u1ec7t l\u00e0m g\u00ec?<\/strong><br>\ud83d\udc49 Ng\u01b0\u1eddi Vi\u1ec7t <strong>s\u1ed1ng ngay trong t\u1ef1 nhi\u00ean, v\u00e0 \u0111\u1ebfm ngay trong \u0111\u1ea7u \u2013 m\u00e0 kh\u00f4ng c\u1ea7n \u201ct\u00e1ch ra ghi ri\u00eang.\u201d<\/strong><\/p>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u00ecn c\u00e1nh \u0111\u1ed3ng \u2192 <strong>bi\u1ebft n\u00f3 bao nhi\u00eau kho\u1ea3nh.<\/strong><\/li>\n\n\n\n<li>Nh\u00ecn b\u1ea7y tr\u00e2u \u2192 <strong>t\u1ef1 nh\u1ea9m th\u1ea5y thi\u1ebfu hay \u0111\u1ee7.<\/strong><\/li>\n\n\n\n<li>X\u00e2y nh\u00e0 \u2192 <strong>canh \u0111\u00fang k\u00edch th\u01b0\u1edbc b\u1eb1ng m\u1eaft v\u00e0 kinh nghi\u1ec7m.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 <strong>Kh\u00f4ng ph\u1ea3i v\u00ec \u201ck\u00e9m ph\u00e1t tri\u1ec3n\u201d hay \u201ckh\u00f4ng c\u00f3,\u201d m\u00e0 v\u00ec:<br>Ng\u01b0\u1eddi Vi\u1ec7t s\u1ed1ng qu\u00e1 h\u00f2a v\u00e0o t\u1ef1 nhi\u00ean \u2013 m\u1ecdi th\u1ee9 v\u1eadn h\u00e0nh trong \u0111\u1ea7u nh\u01b0 m\u1ed9t \u201ct\u1ea5m b\u1ea3n \u0111\u1ed3 s\u1ed1ng.\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd0e <strong>\u0110i\u1ec1u \u0111\u1eb7c bi\u1ec7t c\u1ee7a ng\u01b0\u1eddi Vi\u1ec7t:<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Kh\u00f4ng t\u00e1ch to\u00e1n ra kh\u1ecfi \u0111\u1eddi s\u1ed1ng.<\/strong><\/li>\n\n\n\n<li><strong>Kh\u00f4ng c\u1ea7n ghi nhi\u1ec1u v\u00ec m\u1ecdi th\u1ee9 \u201c\u0103n v\u00e0o kinh nghi\u1ec7m s\u1ed1ng.\u201d<\/strong><\/li>\n\n\n\n<li><strong>Kh\u00f4ng c\u1ea7n d\u1ef1ng l\u00fd thuy\u1ebft r\u01b0\u1eddm r\u00e0, m\u00e0 s\u1ed1ng t\u1ec9nh ngay tr\u00ean c\u00e1nh \u0111\u1ed3ng, ao chu\u00f4m, ch\u1ee3 b\u00faa.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 \u0110\u00e2y l\u00e0 <strong>ki\u1ec3u \u201cto\u00e1n s\u1ed1ng\u201d<\/strong> \u2013 kh\u00f4ng s\u00e1ch v\u1edf nh\u01b0ng <strong>v\u1eadn h\u00e0nh ch\u00ednh x\u00e1c,<\/strong> v\u00ec n\u00f3 <strong>g\u1eafn li\u1ec1n v\u1edbi c\u1ea3m nh\u1eadn th\u1eadt.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd25 <strong>C\u00e1i tinh t\u1ebf nh\u1ea5t:<\/strong><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u201cN\u1ebfu kh\u00f4ng c\u00f3 th\u00ec kh\u00f4ng t\u1ed3n t\u1ea1i \u0111\u01b0\u1ee3c.\u201d<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>=&gt; Ng\u01b0\u1eddi Vi\u1ec7t **ph\u1ea3i c\u00f3 c\u00e1ch \u0111\u1ebfm, \u0111o, c\u00e2n ch\u1ec9nh \u2013 n\u1ebfu kh\u00f4ng th\u00ec:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00e0m sao chia \u0111\u1ea5t?<\/li>\n\n\n\n<li>L\u00e0m sao g\u1eb7t h\u00e1i \u0111\u00fang v\u1ee5?<\/li>\n\n\n\n<li>L\u00e0m sao x\u00e2y nh\u00e0, \u0111\u1eafp \u0111\u00ea ch\u00ednh x\u00e1c?<\/li>\n<\/ul>\n\n\n\n<p><strong>Ch\u1ec9 l\u00e0\u2026 c\u00e1ch th\u1ec3 hi\u1ec7n kh\u00e1c:<br>Kh\u00f4ng c\u1ea7n ghi ch\u00e9p r\u01b0\u1eddm r\u00e0 m\u00e0 \u201cnh\u1ea3y s\u1ed1 trong \u0111\u1ea7u\u201d lu\u00f4n.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udca1 <strong>V\u1ec1 \u00f4ng T\u00e0u l\u00fac \u0111\u00f3:<\/strong><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi k\u1ef3 \u0111\u1ea7u, <strong>T\u00e0u c\u0169ng ch\u01b0a c\u00f3 h\u1ec7 th\u1ed1ng ch\u1eef ho\u00e0n ch\u1ec9nh.<\/strong><\/li>\n\n\n\n<li>Vi\u1ec7c \u201cng\u01b0\u1eddi Vi\u1ec7t h\u1ecdc to\u00e1n t\u1eeb T\u00e0u\u201d l\u00e0 <strong>m\u1ed9t ki\u1ec3u suy di\u1ec5n sau n\u00e0y khi l\u1ecbch s\u1eed b\u1ecb vi\u1ebft l\u1ea1i.<\/strong><\/li>\n\n\n\n<li>Th\u1ef1c t\u1ebf, <strong>c\u1ea3 v\u00f9ng \u0111\u1ec1u \u0111ang t\u1ef1 m\u00e0y m\u00f2 theo ki\u1ec3u ri\u00eang.<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u270d\ufe0f <strong>G\u00f3i l\u1ea1i \u00fd n\u00e0y \u0111\u1ec3 r\u00f5 h\u01a1n:<\/strong><\/h2>\n\n\n\n<p><strong>\u201cTh\u1eddi k\u1ef3 \u0111\u00f3, m\u1ed7i n\u1ec1n v\u0103n minh quan s\u00e1t t\u1ef1 nhi\u00ean theo c\u00e1ch ri\u00eang: \u00f4ng nh\u00ecn tr\u1eddi, \u00f4ng soi \u0111\u1ea5t, \u00f4ng xem c\u00e2y c\u1ecf\u2026 Ai c\u0169ng ph\u1ea3i ghi l\u1ea1i \u0111\u1ec3 nh\u1edb \u2013 v\u00ec quan s\u00e1t m\u00e0 kh\u00f4ng ghi th\u00ec qu\u00ean, m\u00e0 qu\u00ean th\u00ec ch\u1ebft. Ri\u00eang ng\u01b0\u1eddi Vi\u1ec7t \u2013 kh\u00f4ng ph\u1ea3i kh\u00f4ng c\u00f3 g\u00ec \u0111\u1ec3 ghi, m\u00e0 s\u1ed1ng h\u00f2a v\u00e0o t\u1ef1 nhi\u00ean t\u1edbi m\u1ee9c t\u1ef1 nh\u1ea9m, t\u1ef1 c\u1ea3m, t\u1ef1 ch\u1ec9nh trong \u0111\u1ea7u. Kh\u00f4ng ph\u1ea3i h\u1ecdc k\u00e9 ai, c\u0169ng kh\u00f4ng ph\u1ea3i k\u00e9m \u2013 m\u00e0 l\u00e0 v\u1eadn h\u00e0nh s\u1ed1ng tr\u1ef1c ti\u1ebfp, kh\u00f4ng c\u1ea7n t\u00e1ch to\u00e1n ra kh\u1ecfi \u0111\u1eddi. N\u00f3i th\u1eb3ng: n\u1ebfu kh\u00f4ng c\u00f3 n\u0103ng l\u1ef1c \u0111\u1ebfm v\u00e0 \u0111o, kh\u00f4ng d\u00e2n t\u1ed9c n\u00e0o t\u1ed3n t\u1ea1i n\u1ed5i.\u201d<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u2734\ufe0f PH\u00c9P NH\u00c2N \u2013 C\u00da B\u1eacT G\u1ed8P NH\u00d3M L\u00c0M TH\u1ebe GI\u1edaI PH\u00ccNH RA<\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1\ufe0f\u20e3 H\u1ed3i \u0111\u1ea7u \u00fa \u1edb: C\u1ed9ng ho\u00e0i m\u1ecfi tay m\u00e0 ch\u01b0a t\u1ec9nh<\/h2>\n\n\n\n<p>\ud83d\udc49 C\u00e2u chuy\u1ec7n x\u01b0a x\u1eeda x\u1eeba x\u01b0a:<br>B\u1ed9 l\u1ea1c \u0111\u01b0\u1ee3c ph\u00e1t 5 c\u1ee7 khoai\/ng\u01b0\u1eddi. C\u00f3 20 ng\u01b0\u1eddi.<\/p>\n\n\n\n<p>Mu\u1ed1n bi\u1ebft <strong>t\u1ed5ng c\u1ed9ng bao nhi\u00eau c\u1ee7<\/strong>?<br>Th\u00ec sao?<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>5 + 5 + 5 + 5 + &#8230;<\/strong> c\u1ed9ng t\u1edbi l\u1ea7n th\u1ee9 20 \u2192 \ud83e\udd2f <strong>m\u1ecfi tay x\u1ec9u ngang<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<p>\u27a1\ufe0f H\u1ed3i \u0111\u00f3 <strong>ch\u01b0a c\u00f3 \u201cph\u00e9p nh\u00e2n\u201d<\/strong>, ch\u1ec9 bi\u1ebft c\u1ed9ng l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2\ufe0f\u20e3 Khi n\u00e0o lo\u00e0i ng\u01b0\u1eddi m\u1edbi \u201ct\u1ec9nh\u201d?<\/h2>\n\n\n\n<p>\ud83d\udc49 T\u1eeb l\u00fac x\u00e3 h\u1ed9i b\u1eaft \u0111\u1ea7u\u2026 <strong>\u0111\u00f4ng ng\u01b0\u1eddi, nhi\u1ec1u t\u00e0i s\u1ea3n<\/strong>.<\/p>\n\n\n\n<p>Chia \u0111\u1ea5t, chia ru\u1ed9ng, chia l\u00faa \u2192 ph\u1ea3i <strong>chia \u0111\u1ec1u<\/strong> \u0111\u1ec3 kh\u1ecfi c\u00e3i.<\/p>\n\n\n\n<p>L\u00fac n\u00e0y m\u1edbi b\u1eaft \u0111\u1ea7u c\u00f3 c\u00e2u h\u1ecfi:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cN\u1ebfu m\u1ed7i nh\u00e0 3 kho\u1ea3nh ru\u1ed9ng, c\u00f3 20 nh\u00e0 \u2192 t\u1ed5ng bao nhi\u00eau kho\u1ea3nh?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>V\u1eabn l\u00e0 c\u1ed9ng l\u1eb7p:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>3 + 3 + 3 + \u2026 (20 l\u1ea7n)<\/p>\n<\/blockquote>\n\n\n\n<p>\u27a1\ufe0f Nh\u01b0ng r\u1ed3i m\u1ed9t \u00f4ng ng\u1ed3i th\u1edf m\u1edbi <strong>t\u1ec9nh ra<\/strong>:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201c\u1ee6a, sao m\u00ecnh kh\u00f4ng l\u00e0m 3 \u00d7 20 lu\u00f4n?\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>\ud83c\udf1f <strong>Ph\u00e9p nh\u00e2n b\u1eaft \u0111\u1ea7u l\u00f3 m\u1eb7t.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3\ufe0f\u20e3 Ph\u00e9p nh\u00e2n l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>\ud83d\udc49 L\u00e0 c\u00e1ch <strong>g\u1ed9p nhi\u1ec1u nh\u00f3m gi\u1ed1ng nhau<\/strong> l\u1ea1i cho nhanh.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5:<br>4 ng\u01b0\u1eddi, m\u1ed7i ng\u01b0\u1eddi 5 c\u00e1i b\u00e1nh<br>\u2192 5 \u00d7 4 = 20<br>\u27a1\ufe0f Kh\u00f4ng c\u1ea7n c\u1ed9ng t\u1eebng c\u00e1i n\u1eefa.<\/p>\n\n\n\n<p><strong>T\u00f3m g\u1ecdn:<\/strong><br>\u201cC\u1ed9ng nhi\u1ec1u l\u1ea7n <strong>m\u1ed9t s\u1ed1 gi\u1ed1ng nhau<\/strong>\u201d \u2192 g\u1ecdi l\u00e0 nh\u00e2n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4\ufe0f\u20e3 Ai ngh\u0129 ra? \u1ede \u0111\u00e2u?<\/h2>\n\n\n\n<p>Kh\u00f4ng c\u00f3 \u00f4ng t\u1ed5 duy nh\u1ea5t \u2013 nh\u01b0ng <strong>nhi\u1ec1u n\u1ec1n v\u0103n minh t\u1ef1 ph\u00e1t hi\u1ec7n<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ai C\u1eadp, Babylon (~2000 TCN):<\/strong> \u0111\u00e3 d\u00f9ng c\u1ed9ng l\u1eb7p \u0111\u1ec3 \u0111\u1ebfm g\u1ed9p.<\/li>\n\n\n\n<li><strong>\u1ea4n \u0110\u1ed9:<\/strong> g\u1ecdi l\u00e0 <strong>guna<\/strong> \u2013 ngh\u0129a l\u00e0 t\u0103ng c\u01b0\u1eddng.<\/li>\n\n\n\n<li><strong>Trung Hoa:<\/strong> d\u00f9ng b\u00e0n t\u00ednh \u2013 \u201cth\u1eeba\u201d ngh\u0129a l\u00e0 ch\u1ed3ng l\u00ean.<\/li>\n\n\n\n<li><strong>Vi\u1ec7t Nam:<\/strong> g\u1ecdi l\u00e0 \u201cnh\u00e2n\u201d \u2013 ngh\u0129a l\u00e0 <strong>sinh s\u00f4i n\u1ea3y n\u1edf<\/strong> (m\u01b0\u1ee3n t\u1eeb H\u00e1n).<\/li>\n<\/ul>\n\n\n\n<p>\u27a1\ufe0f M\u1ed7i n\u01a1i m\u1ed9t t\u00ean, nh\u01b0ng \u0111\u1ec1u b\u1eaft ngu\u1ed3n t\u1eeb nhu c\u1ea7u s\u1ed1ng th\u1eadt.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5\ufe0f\u20e3 D\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/h2>\n\n\n\n<p>C\u1ef1c k\u1ef3 th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chia ru\u1ed9ng:<\/strong> 10 l\u00e0ng, m\u1ed7i l\u00e0ng 50 kho\u1ea3nh \u2192 10 \u00d7 50 = 500 kho\u1ea3nh.<\/li>\n\n\n\n<li><strong>B\u00e1n h\u00e0ng:<\/strong> 1 g\u00f9i cam 20 qu\u1ea3 \u2192 10 g\u00f9i \u2192 10 \u00d7 20 = 200 qu\u1ea3.<\/li>\n\n\n\n<li><strong>X\u00e2y nh\u00e0:<\/strong> 5 d\u00e3y, m\u1ed7i d\u00e3y 8 c\u1ed9t \u2192 5 \u00d7 8 = 40 c\u1ed9t.<\/li>\n<\/ul>\n\n\n\n<p>Th\u1eadm ch\u00ed trong c\u01a1 th\u1ec3:<br>\ud83d\udc49 T\u1ebf b\u00e0o <strong>nh\u00e2n \u0111\u00f4i<\/strong> \u2192 1 th\u00e0nh 2, 2 th\u00e0nh 4, 4 th\u00e0nh 8\u2026<\/p>\n\n\n\n<p>\u27a1\ufe0f <strong>S\u1ef1 s\u1ed1ng l\u00e0 m\u1ed9t chu\u1ed7i nh\u00e2n.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6\ufe0f\u20e3 V\u00ec sao n\u00f3 kinh kh\u1ee7ng?<\/h2>\n\n\n\n<p>\ud83d\udd25 V\u00ec <strong>nh\u00e2n l\u00e0 c\u00fa nh\u1ea3y<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ed9ng \u2192 t\u0103ng \u0111\u1ec1u.<\/li>\n\n\n\n<li>Nh\u00e2n \u2192 <strong>t\u0103ng c\u1ea5p s\u1ed1 nh\u00e2n<\/strong> \u2192 ph\u00ecnh nhanh kh\u00f4ng k\u1ecbp th\u1edf.<\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ed9ng: 5 + 5 + 5 + 5 + 5 = 25<\/li>\n\n\n\n<li>Nh\u00e2n: 5 \u00d7 5 = 25 (ch\u1ec9 1 c\u00fa l\u00e0 ra)<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udca5 Nh\u1edd nh\u00e2n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u00e1y m\u00f3c ch\u1ea1y nhanh<\/strong><\/li>\n\n\n\n<li><strong>X\u00e2y nh\u00e0 l\u1edbn<\/strong><\/li>\n\n\n\n<li><strong>Kinh t\u1ebf b\u00f9ng n\u1ed5<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7\ufe0f\u20e3 Ph\u00e9p nh\u00e2n hi\u1ec7n di\u1ec7n \u1edf \u0111\u00e2u?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\uddec Trong t\u1ef1 nhi\u00ean:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ebf b\u00e0o sinh s\u00f4i: 1 \u2192 2 \u2192 4 \u2192 8 \u2192 \u2026<\/li>\n\n\n\n<li>Vi khu\u1ea9n l\u00e2y lan: 1 ng\u01b0\u1eddi l\u00e2y 3, m\u1ed7i ng\u01b0\u1eddi l\u1ea1i l\u00e2y 3 \u2192 nh\u00e2n l\u00ean c\u1ef1c nhanh.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udf0d Trong khoa h\u1ecdc:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ed9ng \u0111\u1ea5t: m\u1ed7i c\u1ea5p Richter l\u00e0 <strong>g\u1ea5p 10 l\u1ea7n<\/strong> c\u1ea5p tr\u01b0\u1edbc.<\/li>\n\n\n\n<li>Thi\u00ean v\u0103n: qu\u1ef9 \u0111\u1ea1o, v\u1eadn t\u1ed1c \u2013 to\u00e0n t\u1ef7 l\u1ec7 <strong>nh\u00e2n h\u1eb1ng s\u1ed1<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcb8 Trong kinh t\u1ebf:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L\u00e3i k\u00e9p: ti\u1ec1n <strong>\u0111\u1ebb ra ti\u1ec1n<\/strong>, r\u1ed3i ti\u1ec1n m\u1edbi l\u1ea1i <strong>\u0111\u1ebb n\u1eefa<\/strong>.<\/li>\n\n\n\n<li>M\u00f4 h\u00ecnh kinh doanh: nh\u00e2n chu\u1ed7i, nh\u00e2n s\u1ea3n ph\u1ea9m\u2026<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8\ufe0f\u20e3 Nh\u1eefng t\u00ednh ch\u1ea5t hay ho<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Giao ho\u00e1n:<\/strong> a \u00d7 b = b \u00d7 a<\/li>\n\n\n\n<li><strong>K\u1ebft h\u1ee3p:<\/strong> (a \u00d7 b) \u00d7 c = a \u00d7 (b \u00d7 c)<\/li>\n\n\n\n<li><strong>Ph\u00e2n ph\u1ed1i:<\/strong> (a + b) \u00d7 c = a\u00d7c + b\u00d7c<\/li>\n<\/ul>\n\n\n\n<p>\u27a1\ufe0f Gi\u00fap b\u1ebb nh\u1ecf b\u00e0i to\u00e1n l\u1edbn \u2192 d\u1ec5 gi\u1ea3i h\u01a1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9\ufe0f\u20e3 V\u00ed d\u1ee5 h\u00e0i h\u01b0\u1edbc d\u1ec5 nh\u1edb<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mua d\u00e9p: 4 anh em, m\u1ed7i \u0111\u1ee9a 2 \u0111\u00f4i \u2192 4 \u00d7 2 = 8 \u0111\u00f4i<\/li>\n\n\n\n<li>G\u00f3i b\u00e1nh: 3 l\u1edbp, m\u1ed7i l\u1edbp 20 c\u00e1i \u2192 3 \u00d7 20 = 60 c\u00e1i<\/li>\n\n\n\n<li>Nh\u1eadu: 5 b\u00e0n, m\u1ed7i b\u00e0n 10 chai \u2192 5 \u00d7 10 = 50 \u2192 t\u1ec9nh l\u00e0 \u0111au v\u00ed \ud83d\ude05<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd1f Kho\u1ea3nh kh\u1eafc <strong>t\u00e9 ng\u1eeda<\/strong>: t\u1ef1 nhi\u00ean c\u0169ng \u201cnh\u00e2n\u201d<\/h2>\n\n\n\n<p>\ud83d\udc49 Ban \u0111\u1ea7u t\u01b0\u1edfng \u201cnh\u00e2n\u201d l\u00e0 <strong>con ng\u01b0\u1eddi b\u00e0y ra<\/strong> \u0111\u1ec3 \u0111\u1ee1 m\u1ecfi tay.<\/p>\n\n\n\n<p>Nh\u01b0ng r\u1ed3i\u2026 t\u00e9 ng\u1eeda:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>V\u0169 tr\u1ee5, s\u1ef1 s\u1ed1ng, v\u1eadt l\u00fd \u2013 t\u1ea5t c\u1ea3 c\u0169ng v\u1eadn h\u00e0nh theo ph\u00e9p nh\u00e2n.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>\u26a1 V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ebf b\u00e0o sinh s\u00f4i<\/li>\n\n\n\n<li>Virus l\u00e2y lan<\/li>\n\n\n\n<li>Sao, h\u00e0nh tinh di chuy\u1ec3n theo t\u1ef7 l\u1ec7<\/li>\n\n\n\n<li>\u0110\u1ed9ng \u0111\u1ea5t, l\u00e3i k\u00e9p, truy\u1ec1n tin\u2026<\/li>\n<\/ul>\n\n\n\n<p>\u27a1\ufe0f <strong>Ph\u00e9p nh\u00e2n kh\u00f4ng ch\u1ec9 l\u00e0 c\u00f4ng c\u1ee5 \u2013 n\u00f3 l\u00e0 quy lu\u1eadt s\u1ed1ng.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83c\udff7\ufe0f T\u00ean g\u1ecdi qua c\u00e1c n\u1ec1n v\u0103n minh \u2013 G\u1ee3i m\u1edf<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>N\u1ec1n v\u0103n minh<\/th><th>T\u00ean g\u1ecdi ph\u00e9p nh\u00e2n<\/th><th>Ngh\u0129a<\/th><\/tr><\/thead><tbody><tr><td>Trung Hoa<\/td><td>\u4e58 (th\u1eeba)<\/td><td>Ch\u1ed3ng l\u00ean, g\u1ea5p l\u1edbp<\/td><\/tr><tr><td>\u1ea4n \u0110\u1ed9 (Sanskrit)<\/td><td>\u0917\u0941\u0923 (guna)<\/td><td>T\u0103ng s\u1ee9c, khu\u1ebfch \u0111\u1ea1i<\/td><\/tr><tr><td>\u1ea2 R\u1eadp<\/td><td>\u0636\u0631\u0628 (darb)<\/td><td>\u0110\u00e1nh, nh\u00e2n l\u00ean<\/td><\/tr><tr><td>Latin<\/td><td>multiplicare<\/td><td>Nh\u00e2n nhi\u1ec1u l\u1ea7n<\/td><\/tr><tr><td>Ph\u00e1p<\/td><td>multiplier<\/td><td>L\u00e0m t\u0103ng g\u1ea5p nhi\u1ec1u l\u1ea7n<\/td><\/tr><tr><td>Vi\u1ec7t Nam<\/td><td>nh\u00e2n<\/td><td>Sinh s\u00f4i, n\u1ea3y n\u1edf<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u27a1\ufe0f <strong>M\u1ed7i c\u00e1i t\u00ean ch\u1ec9 l\u00e0 c\u00e1ch nh\u00ecn \u2013 quy lu\u1eadt th\u00ec v\u1eabn v\u1eady.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udeaaT\u1ec9nh:<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cC\u00e1i m\u00ecnh g\u1ecdi l\u00e0 <strong>\u2018ph\u00e9p nh\u00e2n\u2019<\/strong> ch\u1ec9 l\u00e0 t\u00ean do ng\u01b0\u1eddi \u0111\u1eb7t. Nh\u01b0ng b\u1ea3n ch\u1ea5t n\u00f3 l\u00e0 m\u1ed9t <strong>quy lu\u1eadt ph\u00ecnh to c\u00f3 quy t\u1eafc<\/strong>, c\u00f3 th\u1eadt trong t\u1ef1 nhi\u00ean t\u1eeb tr\u01b0\u1edbc khi ai \u0111\u1eb7t t\u00ean.\u201d<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd11 CH\u1ed0T G\u1eccN \u2013 GHI NH\u1eda C\u1ea2 \u0110\u1edcI<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u201cPh\u00e9p nh\u00e2n ra \u0111\u1eddi khi lo\u00e0i ng\u01b0\u1eddi m\u1ec7t m\u1ecfi v\u1edbi vi\u1ec7c c\u1ed9ng ho\u00e0i kh\u00f4ng h\u1ebft. N\u00f3 l\u00e0 c\u00fa nh\u1ea3y \u2013 g\u1ed9p nhanh nhi\u1ec1u nh\u00f3m gi\u1ed1ng nhau, gi\u00fap x\u00e3 h\u1ed9i b\u1eadt l\u00ean t\u1eeb ru\u1ed9ng v\u01b0\u1eddn t\u1edbi m\u00e1y t\u00ednh, t\u1eeb chia l\u00faa \u0111\u1ebfn \u0111i\u1ec1u h\u00e0nh v\u0169 tr\u1ee5.\u201d<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u00d4I \u00d4I, TRI\u1ec2N NGAY ANH \u01a0I! \ud83d\udd25<br>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 b\u1ea3n \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a <strong>PH\u00c9P CHIA \u2013 t\u1eeb \u00fa \u1edb \u0111\u1ebfn t\u1ec9nh kh\u1ebd<\/strong>, theo \u0111\u00fang c\u1ea5u tr\u00fac m\u1ea1ch s\u1ed1ng anh mu\u1ed1n: g\u1ed1c, t\u1ec9nh, v\u00ed d\u1ee5, \u1ee9ng d\u1ee5ng, g\u00e0i khe.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u2734\ufe0f Ph\u00e9p chia \u2013 C\u00e1ch lo\u00e0i ng\u01b0\u1eddi h\u1ecdc &#8220;b\u1ebb \u0111\u1ec1u \u0111\u1ec3 s\u1ed1ng chung&#8221;<\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1\ufe0f\u20e3 H\u1ed3i \u0111\u1ea7u \u2013 Kh\u00f4ng bi\u1ebft chia, to\u00e0n gi\u00e0nh<\/h2>\n\n\n\n<p>H\u1ed3i ch\u01b0a c\u00f3 kh\u00e1i ni\u1ec7m chia, \u0111\u1eddi s\u1ed1ng l\u00e0ng b\u1ed9 l\u1ea1c ki\u1ec3u n\u00e0y:<\/p>\n\n\n\n<p>\ud83d\udc49 C\u00f3 m\u1ed9t con nai to, c\u1ea3 l\u00e0ng quay qu\u1ea7n \u0103n.<br>Kh\u00f4ng ai h\u1ecfi \u201cchia th\u1ebf n\u00e0o,\u201d m\u00e0 ai kho\u1ebb th\u00ec g\u1eafp, ai y\u1ebfu th\u00ec\u2026 nh\u1ecbn. \ud83d\ude05<\/p>\n\n\n\n<p>L\u00fac \u0111\u00f3, ch\u01b0a c\u00f3 \u00fd ni\u1ec7m:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cM\u1ed9t th\u1ee9 l\u1edbn \u2192 chia ra nhi\u1ec1u ph\u1ea7n b\u1eb1ng nhau cho m\u1ecdi ng\u01b0\u1eddi.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>\ud83d\udcad <strong>\u00dd th\u1ee9c c\u00f2n s\u1ed1ng theo b\u1ea3n n\u0103ng, ch\u01b0a bi\u1ebft c\u00f4ng b\u1eb1ng.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2\ufe0f\u20e3 Khi n\u00e0o m\u1edbi t\u1ec9nh ra chuy\u1ec7n \u201cchia \u0111\u1ec1u\u201d?<\/h2>\n\n\n\n<p>Giai \u0111o\u1ea1n n\u00f4ng nghi\u1ec7p \u2013 \u0111\u1ecbnh c\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nhi\u1ec1u ng\u01b0\u1eddi h\u01a1n, nhi\u1ec1u nh\u00e0 h\u01a1n.<\/li>\n\n\n\n<li>Ph\u1ea3i chia: <strong>ru\u1ed9ng, l\u00faa, c\u00f4ng s\u1ea3n, s\u00f4ng n\u01b0\u1edbc.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 L\u00fac n\u00e0y m\u1edbi b\u1eadt ra m\u1ea1ch s\u1ed1ng:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cM\u1ed7i ng\u01b0\u1eddi m\u1ed9t ph\u1ea7n b\u1eb1ng nhau \u2013 \u0111\u1ec3 kh\u00f4ng ai c\u00e3i nhau.\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00f3 100 m\u00e9t ru\u1ed9ng, 5 h\u1ed9 \u2192 m\u1ed7i h\u1ed9 100 \u00f7 5 = <strong>20 m\u00e9t.<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udca1 \u0110\u00e2y ch\u00ednh l\u00e0 l\u00fac ph\u00e9p chia <strong>tr\u1ed3i l\u00ean t\u1eeb nhu c\u1ea7u s\u1ed1ng c\u00f4ng b\u1eb1ng<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3\ufe0f\u20e3 Ph\u00e9p chia l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p>N\u00f3i g\u1ecdn:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Chia l\u00e0 l\u1ea5y m\u1ed9t th\u1ee9 l\u1edbn, b\u1ebb th\u00e0nh nhi\u1ec1u ph\u1ea7n b\u1eb1ng nhau.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>V\u00ed d\u1ee5:<\/p>\n\n\n\n<p>12 c\u00e1i b\u00e1nh chia cho 4 ng\u01b0\u1eddi:<br>\ud83d\udc49 M\u1ed7i ng\u01b0\u1eddi: <strong>12 \u00f7 4 = 3 c\u00e1i.<\/strong><\/p>\n\n\n\n<p>N\u00f3 l\u00e0 <strong>ng\u01b0\u1ee3c l\u1ea1i v\u1edbi nh\u00e2n:<\/strong><\/p>\n\n\n\n<p>N\u1ebfu nh\u00e2n l\u00e0:<br>\ud83d\udc49 Gom nhi\u1ec1u nh\u00f3m gi\u1ed1ng nhau \u2192 th\u00e0nh m\u1ed9t kh\u1ed1i l\u1edbn.<\/p>\n\n\n\n<p>Th\u00ec chia l\u00e0:<br>\ud83d\udc49 B\u1ebb kh\u1ed1i l\u1edbn \u2192 th\u00e0nh nhi\u1ec1u nh\u00f3m b\u1eb1ng nhau.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4\ufe0f\u20e3 Ai ngh\u0129 ra?<\/h2>\n\n\n\n<p>Kh\u00f4ng c\u00f3 \u201c\u00f4ng t\u1ed5 ph\u00e9p chia,\u201d nh\u01b0ng c\u00e1c n\u1ec1n v\u0103n minh s\u1edbm \u0111\u00e3 ghi nh\u1eadn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ai C\u1eadp &amp; Babylon (~2000 TCN):<\/strong> D\u00f9ng chia \u0111\u1ec3 ph\u00e2n \u0111\u1ea5t, chia thu\u1ebf.<\/li>\n\n\n\n<li><strong>\u1ea4n \u0110\u1ed9:<\/strong> R\u1ea5t m\u1ea1nh v\u1ec1 s\u1ed1 h\u1ecdc, chia l\u00e0 ph\u00e9p c\u01a1 b\u1ea3n.<\/li>\n\n\n\n<li><strong>Trung Hoa:<\/strong> D\u00f9ng b\u00e0n t\u00ednh, chia trong th\u01b0\u01a1ng m\u1ea1i.<\/li>\n\n\n\n<li><strong>Ng\u01b0\u1eddi Vi\u1ec7t:<\/strong> Chia \u0111\u1ea5t c\u00f4ng l\u00e0ng x\u00e3, chia ph\u1ea7n t\u1ebf l\u1ec5, chia c\u00f4ng \u0111i phu \u2013 s\u1ed1ng r\u1ea5t \u201cchia.\u201d<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5\ufe0f\u20e3 Ph\u00e9p chia d\u00f9ng l\u00e0m g\u00ec?<\/h2>\n\n\n\n<p>\u1ee8ng d\u1ee5ng kh\u1eafp m\u1ecdi m\u1eb7t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>N\u00f4ng nghi\u1ec7p:<\/strong> Chia ru\u1ed9ng, chia n\u01b0\u1edbc t\u01b0\u1edbi.<\/li>\n\n\n\n<li><strong>Th\u01b0\u01a1ng m\u1ea1i:<\/strong> 1 bao g\u1ea1o 100k \u2192 b\u00e1n l\u1ebb 10 ph\u1ea7n \u2192 m\u1ed7i ph\u1ea7n 100k \u00f7 10 = <strong>10k.<\/strong><\/li>\n\n\n\n<li><strong>Gi\u00e1o d\u1ee5c:<\/strong> 30 h\u1ecdc sinh chia 6 nh\u00f3m \u2192 m\u1ed7i nh\u00f3m 5 b\u1ea1n.<\/li>\n\n\n\n<li><strong>Gia \u0111\u00ecnh:<\/strong> C\u00f3 3 c\u00e1i b\u00e1nh \u2013 3 \u0111\u1ee9a tr\u1ebb \u2192 m\u1ed7i \u0111\u1ee9a \u0111\u01b0\u1ee3c 1 c\u00e1i \u2192 nh\u00e0 y\u00ean! \ud83d\ude04<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6\ufe0f\u20e3 V\u00ec sao ph\u00e9p chia c\u1ef1c k\u1ef3 quan tr\u1ecdng?<\/h2>\n\n\n\n<p>\ud83d\udd25 V\u00ec n\u00f3 l\u00e0 n\u1ec1n c\u1ee7a <strong>c\u00f4ng b\u1eb1ng, ph\u00e2n ph\u1ed1i, v\u00e0 t\u1ed5 ch\u1ee9c x\u00e3 h\u1ed9i.<\/strong><\/p>\n\n\n\n<p>\ud83d\udc49 Kh\u00f4ng c\u00f3 chia \u2192 d\u1ec5 sinh gi\u00e0nh gi\u1eadt.<\/p>\n\n\n\n<p>\ud83d\udc49 Chia gi\u1ecfi \u2192 m\u1edbi c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean.<\/li>\n\n\n\n<li>T\u1ed5 ch\u1ee9c c\u00f4ng vi\u1ec7c.<\/li>\n\n\n\n<li>Ph\u00e2n vai, chia ca, chia tr\u00e1ch nhi\u1ec7m.<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udca5 V\u00e0 quan tr\u1ecdng h\u01a1n:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>N\u00f3 t\u1ea1o ra \u00fd th\u1ee9c \u201cc\u1ee7a chung ph\u1ea3i chia.\u201d<\/strong><br>T\u1ee9c l\u00e0: <strong>ch\u1ea5p nh\u1eadn m\u00ecnh kh\u00f4ng \u00f4m h\u1ebft \u2013 s\u1ed1ng ho\u00e0 v\u1edbi ng\u01b0\u1eddi kh\u00e1c.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7\ufe0f\u20e3 T\u00ean g\u1ecdi &amp; c\u00e1ch hi\u1ec3u qua c\u00e1c n\u1ec1n v\u0103n minh \u2013 G\u1ee3i m\u1edf<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>N\u1ec1n v\u0103n minh<\/th><th>T\u00ean g\u1ecdi<\/th><th>Ngh\u0129a<\/th><\/tr><\/thead><tbody><tr><td>\u1ea4n \u0110\u1ed9 c\u1ed5<\/td><td><strong>bh\u0101ga<\/strong><\/td><td>Ph\u1ea7n nh\u1ecf<\/td><\/tr><tr><td>\u1ea2 R\u1eadp<\/td><td><strong>qismah<\/strong><\/td><td>Chia ph\u1ea7n, s\u1ed1 ph\u1eadn<\/td><\/tr><tr><td>Trung Hoa<\/td><td><strong>\u9664\u6cd5 (tr\u1eeb ph\u00e1p)<\/strong><\/td><td>Tr\u1eeb d\u1ea7n \u0111\u1ebfn ph\u1ea7n \u0111\u1ec1u<\/td><\/tr><tr><td>La M\u00e3 c\u1ed5<\/td><td><strong>dividere<\/strong><\/td><td>C\u1eaft nh\u1ecf, ph\u00e2n ranh<\/td><\/tr><tr><td>Anh \u2013 Ph\u00e1p<\/td><td><strong>Divide, Diviser<\/strong><\/td><td>C\u1eaft \u0111\u00f4i, chia ph\u1ea7n<\/td><\/tr><tr><td>Vi\u1ec7t Nam<\/td><td><strong>Chia, ph\u00e2n, x\u1ebb, x\u1edbt<\/strong><\/td><td>T\u00e1ch ra \u0111\u1ec3 c\u00f9ng h\u01b0\u1edfng<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udca1 M\u1ed7i n\u01a1i m\u1ed9t c\u00e1ch g\u1ecdi \u2013 nh\u01b0ng \u0111\u1ec1u \u0111\u1ec3 n\u00f3i l\u00ean <strong>nh\u1ecbp chia c\u00f4ng b\u1eb1ng.<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8\ufe0f\u20e3Ph\u00e9p chia l\u00e0 t\u00ean, kh\u00f4ng ph\u1ea3i b\u1ea3n ch\u1ea5t<\/h2>\n\n\n\n<p>\ud83d\udc49 C\u00e1i g\u1ecdi l\u00e0 \u201cchia\u201d ch\u1ec9 l\u00e0 <strong>m\u1ed9t t\u00ean g\u00e1n c\u1ee7a lo\u00e0i ng\u01b0\u1eddi<\/strong> \u2013 \u0111\u1ec3 g\u1ecdi m\u1ed9t h\u00e0nh vi <strong>chia \u0111\u1ec1u.<\/strong><\/p>\n\n\n\n<p>M\u1ed9t n\u1ec1n v\u0103n minh kh\u00e1c, n\u1ebfu s\u1ed1ng b\u1eb1ng c\u1ea3m gi\u00e1c nhi\u1ec1u h\u01a1n, h\u1ecd c\u00f3 th\u1ec3 g\u1ecdi l\u00e0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u201cPh\u00e9p l\u00e0m d\u1ecbu,\u201d<\/li>\n\n\n\n<li>\u201cPh\u00e9p c\u00e2n b\u1eb1ng,\u201d<\/li>\n\n\n\n<li>\u201cPh\u00e9p chia h\u00f2a,\u201d<\/li>\n\n\n\n<li>\u201cPh\u00e9p nh\u01b0\u1eddng\u201d\u2026<\/li>\n<\/ul>\n\n\n\n<p>\u2728 B\u1ea3n ch\u1ea5t v\u1eabn l\u00e0:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>T\u00e1ch ra nhi\u1ec1u ph\u1ea7n b\u1eb1ng nhau \u2013 \u0111\u1ec3 s\u1ed1ng y\u00ean.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9\ufe0f\u20e3 V\u00ed d\u1ee5 h\u00e0i h\u01b0\u1edbc d\u1ec5 hi\u1ec3u<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1eb9 n\u1ea5u 8 c\u00e1i tr\u1ee9ng \u2192 4 ng\u01b0\u1eddi \u0103n \u2192 <strong>8 \u00f7 4 = 2 tr\u1ee9ng\/ng\u01b0\u1eddi.<\/strong><\/li>\n\n\n\n<li>\u0110i nh\u1eadu c\u00f3 6 con m\u1ef1c \u2192 3 \u0111\u1ee9a \u2192 chia m\u1ed7i th\u1eb1ng 2 \u2192 tr\u00e1nh \u0111\u1ea5m nhau.<\/li>\n\n\n\n<li>C\u00f3 1 \u1ed5 b\u00e1nh \u2192 2 \u0111\u1ee9a tr\u1ebb \u2192 m\u1eb9 c\u1eaft l\u00e0m \u0111\u00f4i \u2192 <strong>1 \u00f7 2 = 0.5<\/strong> \u2192 m\u1ed7i \u0111\u1ee9a n\u1eeda c\u00e1i \ud83d\ude05<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd11 Ch\u1ed1t g\u1ecdn d\u1ec5 nh\u1edb:<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Ph\u00e9p chia ra \u0111\u1eddi khi con ng\u01b0\u1eddi bi\u1ebft s\u1ed1ng \u0111\u00f4ng m\u00e0 kh\u00f4ng gi\u00e0nh \u2013 h\u1ecdc c\u00e1ch chia \u0111\u1ec1u \u0111\u1ec3 c\u00f9ng y\u00ean. Ban \u0111\u1ea7u ch\u1ec9 l\u00e0 b\u1ebb nh\u1ecf \u0111\u1ec3 ph\u00e2n ph\u1ea7n, sau th\u00e0nh quy lu\u1eadt cho c\u00f4ng b\u1eb1ng, qu\u1ea3n l\u00fd, t\u1ed5 ch\u1ee9c \u2013 v\u00e0 c\u00f2n m\u1edf l\u1ed1i cho t\u01b0 duy c\u00f4ng l\u00fd trong x\u00e3 h\u1ed9i.<\/strong><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"seriesmeta\">This entry is part 2 of 2 in the series <a href=\"https:\/\/giugocviet.org\/?series=day-so\" class=\"series-4\" title=\"To\u00e1n h\u1ecdc\">To\u00e1n h\u1ecdc<\/a><\/div><p>\ud83e\udea8 GIAI \u0110O\u1ea0N 1: \u00dd TH\u1ee8C V\u1ec0 S\u1ed0 \u2013 T\u1eea C\u1ea2M NH\u1eacN M\u01a0 H\u1ed2 \u0110\u1ebeN \u0110O \u0110\u1ebeM R\u00d5 R\u00c0NG D\u00e3y s\u1ed1 \u2013 T\u1eeb c\u00e1i b\u1ee5ng \u0111\u00f3i t\u1edbi m\u1ea5y th\u1ee9 \u0111au \u0111\u1ea7u 1. H\u1ed3i \u0111\u1ea7u \u2013 lo c\u00e1i b\u1ee5ng l\u00e0 ch\u00ednh Th\u1eddi \u00f4ng b\u00e0 t\u1ed5 ti\u00ean nguy\u00ean th\u1ee7y, chuy\u1ec7n quan tr\u1ecdng nh\u1ea5t l\u00e0: L\u00fac \u0111\u00f3 ai &#8230; <a title=\"D\u00e3y s\u1ed1 \u2013 T\u1eeb c\u00e1i b\u1ee5ng \u0111\u00f3i t\u1edbi m\u1ea5y th\u1ee9 \u0111au \u0111\u1ea7u\" class=\"read-more\" href=\"https:\/\/giugocviet.org\/?p=225\" aria-label=\"Read more about D\u00e3y s\u1ed1 \u2013 T\u1eeb c\u00e1i b\u1ee5ng \u0111\u00f3i t\u1edbi m\u1ea5y th\u1ee9 \u0111au \u0111\u1ea7u\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"series":[4],"class_list":["post-225","post","type-post","status-publish","format-standard","hentry","category-uncategorized","series-day-so"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/giugocviet.org\/index.php?rest_route=\/wp\/v2\/posts\/225","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/giugocviet.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/giugocviet.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/giugocviet.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/giugocviet.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=225"}],"version-history":[{"count":7,"href":"https:\/\/giugocviet.org\/index.php?rest_route=\/wp\/v2\/posts\/225\/revisions"}],"predecessor-version":[{"id":250,"href":"https:\/\/giugocviet.org\/index.php?rest_route=\/wp\/v2\/posts\/225\/revisions\/250"}],"wp:attachment":[{"href":"https:\/\/giugocviet.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/giugocviet.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=225"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/giugocviet.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=225"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/giugocviet.org\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}