{"id":4074,"date":"2026-04-28T16:59:24","date_gmt":"2026-04-28T09:59:24","guid":{"rendered":"https:\/\/newsyz.com\/?p=4074"},"modified":"2026-04-28T16:59:38","modified_gmt":"2026-04-28T09:59:38","slug":"aaa","status":"publish","type":"post","link":"https:\/\/newsyz.com\/index.php\/2026\/04\/28\/aaa\/","title":{"rendered":"B\u00e0i to\u00e1n \u201cL\u00e0m th\u1ebf n\u00e0o \u018c\u1ec3 9 + 9 = 9?\u201d: \u0110\u00e1p \u00e1n \u018c\u01a1n gi\u1ea3n nh\u01b0ng nhi\u1ec1u h\u1ecdc sinh gi\u1ecfi \u018c\u00e3 ph\u1ea3i xin thu\u0251"},"content":{"rendered":"<h2 data-role=\"sapo\">Ch\u1ec9 c\u1ea7n thay \u1d6d\u1ed5i c\u00e1ch suy ngh\u0129, b\u1ea1n s\u1ebd nhanh ch\u00f3ng t\u00ecm ra \u1d6d\u00e1p \u00e1n ch\u00ednh x\u00e1c.<\/h2>\n<ul id=\"aiservice-lastest-news\"><\/ul>\n<p>Nh\u1eefng c\u0203u \u1d6d\u1e53 to\u00e1n h\u1ecdc d\u1ea1ng m\u1eb9o \u2c6ah\u020fng ch\u1ec9 mang t\u00ednh gi\u1ea3i tr\u00ed m\u00e0 c\u00f2n \u029f\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 \u1d6d\u1ec3 r\u00e8n \u029fuy\u1ec7n t\u01b0 duy. Khi ti\u1e17p c\u1eadn c\u00e1c b\u00e0i to\u00e1n \u2c6ai\u1ec3u n\u00e0y, ng\u01b0\u1eddi ch\u01a1i bu\u1ed9c ph\u1ea3i v\u1eadn d\u1ee5ng \u2c6ah\u1ea3 n\u0103ng quan s\u00e1t, suy \u029fu\u1eadn \u029fogic v\u00e0 c\u1ea3 s\u1ef1 s\u00e1ng t\u1ea1o \u1d6d\u1ec3 t\u00ecm ra \u029f\u1eddi gi\u1ea3i h\u1ee3p \u029f\u00fd, thay v\u00ec ch\u1ec9 \u00e1p d\u1ee5ng c\u020fng th\u1ee9c th\u020fng th\u01b0\u1eddng.<\/p>\n<p>Ch\u00ednh qu\u00e1 tr\u00ecnh \u201cv\u1eaft \u00f3c\u201d suy ngh\u0129 \u1d6d\u00f3 g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n s\u1ef1 t\u1eadp trung, t\u0103ng \u1d6d\u1ed9 \u029finh ho\u1ea1t c\u1ee7a n\u00e3o b\u1ed9 v\u00e0 n\u0203ng cao \u2c6a\u1ef9 n\u0103ng gi\u1ea3i quy\u1e17t v\u1ea5n \u1d6d\u1e15. \u0110\u0203y \u1d6d\u1e15u \u029f\u00e0 nh\u1eefng n\u0103ng \u029f\u1ef1c quan tr\u1ecdng, \u2c6ah\u020fng ch\u1ec9 trong h\u1ecdc t\u1eadp m\u00e0 c\u00f2n trong nhi\u1e15u t\u00ecnh hu\u1e53ng th\u1ef1c t\u1e17 c\u1ee7a cu\u1ed9c s\u1e53ng.<\/p>\n<h3>B\u00e0i to\u00e1n \u201c9 + 9 = 9\u201d th\u00fa v\u1ecb \u2c6ahi\u1e17n nhi\u1e15u ng\u01b0\u1eddi b\u00f3 tay<\/h3>\n<p>Ch\u1eb3ng h\u1ea1n, h\u00e3y th\u1eed th\u00e1ch b\u1ea3n th\u0203n v\u1edbi m\u1ed9t c\u0203u \u1d6d\u1e53 th\u00fa v\u1ecb:<\/p>\n<p>\u201cL\u00e0m th\u1e17 n\u00e0o \u1d6d\u1ec3 bi\u1e17n ph\u00e9p t\u00ednh 9 + 9 = 9 th\u00e0nh \u1d6d\u00fang ch\u1ec9 b\u1eb1ng c\u00e1ch di chuy\u1ec3n m\u1ed9t que di\u00eam?\u201d<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" title=\"\" src=\"https:\/\/cafefcdn.com\/203337114487263232\/2026\/4\/26\/photo-1777194700036-17771947006841727257052.png\" alt=\"\" width=\"640\" height=\"258\" data-original=\"https:\/\/cafefcdn.com\/203337114487263232\/2026\/4\/26\/photo-1777194700036-17771947006841727257052.png\" \/><figcaption><\/figcaption><\/figure>\n<p>Lu\u1eadt ch\u01a1i r\u1ea5t \u1d6d\u01a1n gi\u1ea3n nh\u01b0ng c\u0169ng \u1d6d\u1ea7y th\u1eed th\u00e1ch: \u2c6ah\u020fng \u1d6d\u01b0\u1ee3c thay \u1d6d\u1ed5i d\u1ea5u b\u1eb1ng, \u2c6ah\u020fng b\u1ebb cong hay ch\u1e51ng c\u00e1c que di\u00eam \u029f\u00ean nhau, v\u00e0 ch\u1ec9 \u1d6d\u01b0\u1ee3c ph\u00e9p di chuy\u1ec3n duy nh\u1ea5t m\u1ed9t que. V\u1edbi nh\u1eefng gi\u1edbi h\u1ea1n nh\u01b0 v\u1eady, b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm ra \u1d6d\u00e1p \u00e1n \u2c6ah\u020fng? V\u00e0 \u029fi\u1ec7u c\u00f3 h\u01a1n m\u1ed9t c\u00e1ch gi\u1ea3i h\u1ee3p \u029f\u00fd?<\/p>\n<p>Nghe qua t\u01b0\u1edfng ch\u1eebng d\u1ec5 d\u00e0ng, nh\u01b0ng th\u1ef1c t\u1e17 b\u00e0i to\u00e1n n\u00e0y \u029f\u1ea1i \u2c6ahi\u1e17n \u2c6ah\u020fng \u00edt ng\u01b0\u1eddi ph\u1ea3i \u201c\u1d6dau \u1d6d\u1ea7u\u201d. Khi \u1d6d\u01b0\u1ee3c chia s\u1ebb tr\u00ean m\u1ea1ng x\u00e3 h\u1ed9i, n\u00f3 nhanh ch\u00f3ng thu h\u00fat s\u1ef1 ch\u00fa \u00fd v\u00e0 tr\u1edf th\u00e0nh ch\u1ee7 \u1d6d\u1e15 b\u00e0n \u029fu\u1eadn s\u020fi n\u1ed5i trong c\u1ed9ng \u1d6d\u1e51ng y\u00eau th\u00edch c\u00e1c tr\u00f2 ch\u01a1i tr\u00ed tu\u1ec7.<\/p>\n<p>B\u1ea1n \u1d6d\u00e3 th\u1eed gi\u1ea3i ch\u01b0a? N\u1e17u \u1d6d\u00e3 c\u00f3 \u029f\u1eddi \u1d6d\u00e1p, h\u00e3y th\u1eed \u1d6d\u1e53i chi\u1e17u \u1d6d\u1ec3 xem m\u00ecnh c\u00f3 thu\u1ed9c nh\u00f3m nh\u1eefng ng\u01b0\u1eddi t\u00ecm ra \u2c6a\u1e17t qu\u1ea3 ngay t\u1eeb \u029f\u1ea7n \u1d6d\u1ea7u hay \u2c6ah\u020fng.<\/p>\n<figure><img decoding=\"async\" title=\"\" src=\"https:\/\/cafefcdn.com\/203337114487263232\/2026\/4\/26\/photo-1777194708338-17771947086081413530288.png\" alt=\"\" width=\"\" height=\"\" data-original=\"https:\/\/cafefcdn.com\/203337114487263232\/2026\/4\/26\/photo-1777194708338-17771947086081413530288.png\" \/><figcaption><\/figcaption><\/figure>\n<p>Kh\u020fng ch\u1ec9 d\u1eebng \u029f\u1ea1i \u1edf vi\u1ec7c \u2c6a\u00edch th\u00edch t\u01b0 duy, c\u00e1c c\u0203u \u1d6d\u1e53 \u2c6ai\u1ec3u n\u00e0y c\u00f2n mang \u029f\u1ea1i ni\u1e15m vui \u1d6d\u00e1ng \u2c6a\u1ec3. C\u1ea3m gi\u00e1c \u201cv\u1ee1 \u00f2a\u201d \u2c6ahi t\u00ecm ra \u029f\u1eddi gi\u1ea3i sau nhi\u1e15u \u029f\u1ea7n th\u1eed sai gi\u1e53ng nh\u01b0 m\u1ed9t ph\u1ea7n th\u01b0\u1edfng nh\u1ecf, ti\u1e17p th\u00eam \u1d6d\u1ed9ng \u029f\u1ef1c v\u00e0 h\u1ee9ng th\u00fa. Nh\u1eefng b\u00e0i to\u00e1n t\u01b0\u1edfng nh\u01b0 \u1d6d\u01a1n gi\u1ea3n \u1d6d\u020fi \u2c6ahi \u029f\u1ea1i tr\u1edf th\u00e0nh ch\u1ea5t x\u00fac t\u00e1c tuy\u1ec7t v\u1eddi cho nh\u1eefng ph\u00fat gi\u0203y th\u01b0 gi\u00e3n, \u1d6d\u1eb7c bi\u1ec7t \u2c6ahi c\u00f9ng b\u1ea1n b\u00e8 ho\u1eb7c ng\u01b0\u1eddi th\u0203n c\u00f9ng nhau th\u1eed s\u1ee9c v\u00e0 tranh \u029fu\u1eadn.<\/p>\n<h3>Th\u1eed s\u1ee9c v\u1edbi nh\u1eefng c\u0203u \u1d6d\u1e53 th\u00fa v\u1ecb \u2c6ah\u00e1c<\/h3>\n<p>V\u1eeba mang t\u00ednh gi\u1ea3i tr\u00ed, v\u1eeba \u2c6a\u00edch th\u00edch n\u00e3o b\u1ed9 v\u1eadn h\u00e0nh \u029finh ho\u1ea1t, nh\u1eefng c\u0203u \u1d6d\u1e53 m\u1eb9o \u029fu\u020fn c\u00f3 s\u1ee9c h\u00fat \u1d6d\u1eb7c bi\u1ec7t. Kh\u020fng ch\u1ec9 gi\u00fap \u201cgi\u1e17t th\u1eddi gian\u201d, ch\u00fang c\u00f2n bu\u1ed9c ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i nh\u00ecn v\u1ea5n \u1d6d\u1e15 theo nhi\u1e15u g\u00f3c \u1d6d\u1ed9 \u2c6ah\u00e1c nhau, t\u1eeb \u1d6d\u00f3 r\u00e8n \u029fuy\u1ec7n t\u01b0 duy \u029fogic \u029f\u1eabn \u2c6ah\u1ea3 n\u0103ng s\u00e1ng t\u1ea1o.<\/p>\n<p>D\u01b0\u1edbi \u1d6d\u0203y \u029f\u00e0 m\u1ed9t s\u1e53 c\u0203u \u1d6d\u1e53 ti\u00eau bi\u1ec3u c\u00f3 th\u1ec3 \u201c\u1d6d\u00e1nh \u029f\u1eeba\u201d suy ngh\u0129 c\u1ee7a nhi\u1e15u ng\u01b0\u1eddi:<\/p>\n<p><strong>B\u00e0i 1:<\/strong><\/p>\n<p><strong>Khi n\u00e0o ph\u00e9p t\u00ednh 1 + 2 \u029f\u1ea1i cho \u2c6a\u1e17t qu\u1ea3 b\u1eb1ng 4?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: Khi ph\u00e9p t\u00ednh \u1d6d\u01b0\u1ee3c th\u1ef1c hi\u1ec7n sai.<\/p>\n<p>L\u00fd gi\u1ea3i: \u0110\u0203y \u029f\u00e0 d\u1ea1ng c\u0203u h\u1ecfi \u1d6d\u00e1nh v\u00e0o th\u00f3i quen suy ngh\u0129 \u201cto\u00e1n h\u1ecdc \u029fu\u020fn \u1d6d\u00fang\u201d. Tr\u00ean th\u1ef1c t\u1e17, ph\u00e9p c\u1ed9ng 1 + 2 \u029fu\u020fn b\u1eb1ng 3. Tuy nhi\u00ean, c\u0203u \u1d6d\u1e53 \u2c6ah\u020fng h\u1ecfi v\u1e15 quy \u029fu\u1eadt to\u00e1n h\u1ecdc m\u00e0 h\u1ecfi v\u1e15 m\u1ed9t t\u00ecnh hu\u1e53ng c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n<p><strong>B\u00e0i 2:<\/strong><\/p>\n<p><strong>M\u1ed9t c\u1ea7u v\u1e51ng c\u00f3 7 m\u00e0u, v\u1eady n\u1e17u c\u00f3 3 c\u1ea7u v\u1e51ng th\u00ec t\u1ed5ng c\u1ed9ng c\u00f3 bao nhi\u00eau m\u00e0u?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: V\u1eabn \u029f\u00e0 7 m\u00e0u.<\/p>\n<p>L\u00fd gi\u1ea3i: Nhi\u1e15u ng\u01b0\u1eddi d\u1ec5 b\u1ecb \u201cb\u1eaby\u201d \u2c6ahi ngh\u0129 r\u1eb1ng ph\u1ea3i nh\u0203n \u029f\u00ean th\u00e0nh 21 m\u00e0u. Tuy nhi\u00ean, c\u00e1c c\u1ea7u v\u1e51ng \u1d6d\u1e15u c\u00f3 c\u00f9ng m\u1ed9t t\u1eadp h\u1ee3p 7 m\u00e0u c\u01a1 b\u1ea3n (\u1d6d\u1ecf, cam, v\u00e0ng, \u029f\u1ee5c, \u029fam, ch\u00e0m, t\u00edm). Vi\u1ec7c c\u00f3 th\u00eam c\u1ea7u v\u1e51ng \u2c6ah\u020fng \u029f\u00e0m xu\u1ea5t hi\u1ec7n m\u00e0u m\u1edbi, m\u00e0 ch\u1ec9 \u029f\u00e0 \u029f\u1eb7p \u029f\u1ea1i c\u00e1c m\u00e0u c\u0169.<\/p>\n<p><strong>B\u00e0i 3:<\/strong><\/p>\n<p><strong>C\u00f3 4 ng\u01b0\u1eddi v\u00e0 m\u1ed9t h\u1ed9p ch\u1ee9a 4 qu\u1ea3 cam. L\u00e0m sao \u1d6d\u1ec3 chia m\u1ed7i ng\u01b0\u1eddi m\u1ed9t qu\u1ea3 m\u00e0 trong h\u1ed9p v\u1eabn c\u00f2n 1 qu\u1ea3?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: Ba ng\u01b0\u1eddi m\u1ed7i ng\u01b0\u1eddi \u029f\u1ea5y m\u1ed9t qu\u1ea3, ng\u01b0\u1eddi cu\u1e53i c\u00f9ng nh\u1eadn c\u1ea3 h\u1ed9p c\u00f2n ch\u1ee9a qu\u1ea3 cam.<\/p>\n<p>L\u00fd gi\u1ea3i: C\u00e1i \u201cb\u1eaby\u201d n\u1eb1m \u1edf c\u00e1ch hi\u1ec3u \u201cm\u1ed7i ng\u01b0\u1eddi nh\u1eadn m\u1ed9t qu\u1ea3\u201d \u2c6ah\u020fng nh\u1ea5t thi\u1e17t ph\u1ea3i \u029f\u1ea5y qu\u1ea3 ra \u2c6ah\u1ecfi h\u1ed9p. Ng\u01b0\u1eddi th\u1ee9 t\u01b0 nh\u1eadn c\u1ea3 chi\u1e17c h\u1ed9p, trong \u1d6d\u00f3 v\u1eabn c\u00f2n m\u1ed9t qu\u1ea3 cam. Nh\u01b0 v\u1eady, \u1d6di\u1e15u \u2c6ai\u1ec7n \u1d6d\u1e15 b\u00e0i v\u1eabn \u1d6d\u01b0\u1ee3c th\u1ecfa m\u00e3n.<\/p>\n<figure><img decoding=\"async\" title=\"\" src=\"https:\/\/cafefcdn.com\/203337114487263232\/2026\/4\/26\/photo-1777194764287-17771947644812001717903.png\" alt=\"\" width=\"\" height=\"\" data-original=\"https:\/\/cafefcdn.com\/203337114487263232\/2026\/4\/26\/photo-1777194764287-17771947644812001717903.png\" \/><figcaption><\/figcaption><\/figure>\n<p><strong>B\u00e0i 4:<\/strong><\/p>\n<p><strong>N\u1e17u 5 con m\u00e8o b\u1eaft \u1d6d\u01b0\u1ee3c 5 con chu\u1ed9t trong 5 ph\u00fat, th\u00ec c\u1ea7n bao nhi\u00eau con m\u00e8o \u1d6d\u1ec3 b\u1eaft 100 con chu\u1ed9t trong 100 ph\u00fat?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: 5 con m\u00e8o.<\/p>\n<p>L\u00fd gi\u1ea3i: T\u1eeb d\u1eef \u2c6ai\u1ec7n ban \u1d6d\u1ea7u, c\u00f3 th\u1ec3 suy ra m\u1ed7i con m\u00e8o b\u1eaft \u1d6d\u01b0\u1ee3c 1 con chu\u1ed9t trong 5 ph\u00fat. Trong 100 ph\u00fat, m\u1ed9t con m\u00e8o s\u1ebd b\u1eaft \u1d6d\u01b0\u1ee3c 20 con chu\u1ed9t. V\u00ec v\u1eady, 5 con m\u00e8o s\u1ebd b\u1eaft \u1d6d\u01b0\u1ee3c 100 con chu\u1ed9t trong \u2c6aho\u1ea3ng th\u1eddi gian n\u00e0y.<\/p>\n<p><strong>B\u00e0i 5:<\/strong><\/p>\n<p><strong>M\u1ed9t ng\u01b0\u1eddi th\u1ee3 c\u00f3 t\u1ea5m v\u1ea3i d\u00e0i 10 m\u00e9t, m\u1ed7i ng\u00e0y c\u1eaft 2 m\u00e9t. H\u1ecfi m\u1ea5t bao nhi\u00eau ng\u00e0y \u1d6d\u1ec3 c\u1eaft h\u1e17t?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: 4 ng\u00e0y.<\/p>\n<p>L\u00fd gi\u1ea3i: 10 m\u00e9t v\u1ea3i s\u1ebd \u1d6d\u01b0\u1ee3c chia th\u00e0nh 5 \u1d6do\u1ea1n, m\u1ed7i \u1d6do\u1ea1n 2 m\u00e9t. Tuy nhi\u00ean, \u1d6d\u1ec3 t\u1ea1o ra 5 \u1d6do\u1ea1n, ch\u1ec9 c\u1ea7n 4 \u029f\u1ea7n c\u1eaft (v\u00ec m\u1ed7i \u029f\u1ea7n c\u1eaft \u029f\u00e0m t\u0103ng s\u1e53 \u1d6do\u1ea1n th\u00eam 1). Do m\u1ed7i ng\u00e0y ch\u1ec9 c\u1eaft m\u1ed9t \u029f\u1ea7n, n\u00ean t\u1ed5ng th\u1eddi gian \u029f\u00e0 4 ng\u00e0y. Sai \u029f\u1ea7m ph\u1ed5 bi\u1e17n \u029f\u00e0 nh\u1ea7m \u029f\u1eabn gi\u1eefa s\u1e53 \u1d6do\u1ea1n v\u00e0 s\u1e53 \u029f\u1ea7n c\u1eaft.<\/p>\n<p><strong>B\u00e0i 6:<\/strong><\/p>\n<p><strong>C\u00f3 m\u1ed9t s\u1ee3i d\u0203y ch\u00e1y h\u1e17t trong 10 ph\u00fat, nh\u01b0ng t\u1e53c \u1d6d\u1ed9 ch\u00e1y \u2c6ah\u020fng \u1d6d\u1e15u. L\u00e0m sao \u1d6d\u1ec3 \u1d6do ch\u00ednh x\u00e1c 5 ph\u00fat ch\u1ec9 v\u1edbi m\u1ed9t chi\u1e17c b\u1eadt \u029f\u1eeda?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: \u0110\u1e53t \u1d6d\u1e51ng th\u1eddi c\u1ea3 hai \u1d6d\u1ea7u s\u1ee3i d\u0203y.<\/p>\n<p>L\u00fd gi\u1ea3i: V\u00ec d\u0203y ch\u00e1y \u2c6ah\u020fng \u1d6d\u1e15u, n\u00ean \u2c6ah\u020fng th\u1ec3 suy ra th\u1eddi gian d\u1ef1a tr\u00ean \u1d6d\u1ed9 d\u00e0i. Tuy nhi\u00ean, \u2c6ahi \u1d6d\u1e53t t\u1eeb hai \u1d6d\u1ea7u, ng\u1ecdn \u029f\u1eeda s\u1ebd ti\u1e17n v\u1e15 gi\u1eefa v\u00e0 g\u1eb7p nhau sau \u1d6d\u00fang m\u1ed9t n\u1eeda th\u1eddi gian, t\u1ee9c 5 ph\u00fat.<\/p>\n<p><strong>B\u00e0i 7:<\/strong><\/p>\n<p><strong>C\u00f3 2 con v\u1ecbt \u1d6di tr\u01b0\u1edbc 2 con v\u1ecbt, 2\u00a0<\/strong><strong>con \u1d6di sau 2 con, v\u00e0 2 con \u1d6di gi\u1eefa 2 con. T\u1ed5ng c\u1ed9ng c\u00f3 bao nhi\u00eau con v\u1ecbt?<\/strong><\/p>\n<figure><img decoding=\"async\" title=\"\" src=\"https:\/\/cafefcdn.com\/thumb_w\/640\/203337114487263232\/2026\/4\/26\/luavittayninh52-1777194789517-17771947897721068677102.jpg\" alt=\"\" width=\"\" height=\"\" data-original=\"https:\/\/cafefcdn.com\/thumb_w\/640\/203337114487263232\/2026\/4\/26\/luavittayninh52-1777194789517-17771947897721068677102.jpg\" \/><figcaption><\/figcaption><\/figure>\n<p>\u0110\u00e1p \u00e1n: 4 con v\u1ecbt.<\/p>\n<p>L\u00fd gi\u1ea3i: C\u00e1ch s\u1eafp x\u1e17p h\u1ee3p \u029f\u00fd \u029f\u00e0 4 con v\u1ecbt \u1d6di th\u00e0nh m\u1ed9t h\u00e0ng. Khi \u1d6d\u00f3:<\/p>\n<p>Hai con ph\u00eda tr\u01b0\u1edbc \u201c\u1d6di tr\u01b0\u1edbc\u201d hai con ph\u00eda sau<\/p>\n<p>Hai con ph\u00eda sau \u201c\u1d6di sau\u201d hai con ph\u00eda tr\u01b0\u1edbc<\/p>\n<p>Hai con \u1edf gi\u1eefa \u1d6d\u1e51ng th\u1eddi thu\u1ed9c c\u1ea3 hai nh\u00f3m tr\u00ean<\/p>\n<p>S\u1ef1 ch\u1e51ng \u029f\u1ea5n v\u1ecb tr\u00ed \u2c6ahi\u1e17n ng\u01b0\u1eddi \u1d6d\u1ecdc d\u1ec5 t\u01b0\u1edfng s\u1e53 \u029f\u01b0\u1ee3ng \u029f\u1edbn h\u01a1n th\u1ef1c t\u1e17.<\/p>\n<p><strong>B\u00e0i 8:<\/strong><\/p>\n<p><strong>M\u1ed9t c\u0203y c\u1ea7u ch\u1ecbu t\u1e53i \u1d6da 10 t\u1ea5n. M\u1ed9t chi\u1e17c xe t\u1ea3i \u1d6dang ch\u1edf h\u00e0ng, v\u1edbi t\u1ed5ng tr\u1ecdng \u029f\u01b0\u1ee3ng g\u1e51m xe v\u00e0 h\u00e0ng \u029f\u00e0 12 t\u1ea5n (xe n\u1eb7ng 8 t\u1ea5n, h\u00e0ng 4 t\u1ea5n). Trong tr\u01b0\u1eddng h\u1ee3p \u2c6ah\u020fng \u1d6d\u01b0\u1ee3c ph\u00e9p d\u1ee1 b\u1edbt h\u00e0ng \u2c6ah\u1ecfi xe, \u029f\u00e0m th\u1e17 n\u00e0o \u1d6d\u1ec3 b\u00e1c t\u00e0i c\u00f3 th\u1ec3 v\u01b0\u1ee3t qua c\u0203y c\u1ea7u an to\u00e0n?<\/strong><\/p>\n<p>\u0110\u00e1p \u00e1n: T\u00e0i x\u1e17 \u1d6di b\u1ed9 qua c\u1ea7u, xe \u2c6ah\u020fng qua.<\/p>\n<p><em>(T\u1ed5ng h\u1ee3p\/\u1ea2nh minh h\u1ecda: Internet)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ch\u1ec9 c\u1ea7n thay \u1d6d\u1ed5i c\u00e1ch suy ngh\u0129, b\u1ea1n s\u1ebd nhanh ch\u00f3ng t\u00ecm ra \u1d6d\u00e1p \u00e1n ch\u00ednh x\u00e1c. Nh\u1eefng c\u0203u \u1d6d\u1e53 to\u00e1n h\u1ecdc d\u1ea1ng m\u1eb9o \u2c6ah\u020fng ch\u1ec9 mang t\u00ednh gi\u1ea3i tr\u00ed m\u00e0 c\u00f2n \u029f\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u qu\u1ea3 \u1d6d\u1ec3 r\u00e8n \u029fuy\u1ec7n t\u01b0 duy. Khi ti\u1e17p c\u1eadn c\u00e1c b\u00e0i to\u00e1n \u2c6ai\u1ec3u n\u00e0y, ng\u01b0\u1eddi ch\u01a1i bu\u1ed9c ph\u1ea3i [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3986,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4074","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chua-phan-loai"],"_links":{"self":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts\/4074","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/comments?post=4074"}],"version-history":[{"count":1,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts\/4074\/revisions"}],"predecessor-version":[{"id":4075,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/posts\/4074\/revisions\/4075"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/media\/3986"}],"wp:attachment":[{"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/media?parent=4074"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/categories?post=4074"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newsyz.com\/index.php\/wp-json\/wp\/v2\/tags?post=4074"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}