{"id":25635,"date":"2021-12-24T17:34:52","date_gmt":"2021-12-24T10:34:52","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=25635"},"modified":"2021-12-24T17:34:53","modified_gmt":"2021-12-24T10:34:53","slug":"bai-so-37-do-vui-luyen-tri-thong-minh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/bai-so-37-do-vui-luyen-tri-thong-minh\/","title":{"rendered":"B\u00c0I S\u1ed0 37 – \u0110\u1ed1 vui luy\u1ec7n tr\u00ed th\u00f4ng minh"},"content":{"rendered":"

<\/a>C\u00c2U 1:<\/h3>\n

H\u00ecnh n\u00e0o kh\u00e1c lo\u1ea1i?<\/p>\n

\"78.jpg\"<\/p>\n

<\/a>C\u00c2U 2:<\/h3>\n

M\u1ed9t \u00f4ng ch\u1ee7 n\u00f4ng tr\u1ea1i n\u1ecd c\u00f3 r\u1ea5t nhi\u1ec1u c\u1eebu. Bi\u1ebft r\u1eb1ng n\u1ebfu \u00f4ng ta b\u00e1n \u0111i m\u1ed9t n\u1eeda s\u1ed1 c\u1eebu c\u1ee7a m\u00ecnh c\u1ed9ng n\u1eeda con c\u1eebu. Sau \u0111\u00f3 l\u1ea1i b\u00e1n ti\u1ebfp m\u1ed9t n\u1eeda s\u1ed1 c\u1eebu c\u00f2n l\u1ea1i c\u1ed9ng n\u1eeda con c\u1eebu. \u00f4ng ta c\u1ee9 b\u00e1n \u0111\u1ebfn l\u1ea7n th\u1ee9 s\u00e1u th\u00ec ch\u1ec9 c\u00f2n m\u1ed9t con duy nh\u1ea5t m\u00e0 th\u00f4i. B\u1ea1n c\u00f3 bi\u1ebft \u00f4ng ta c\u00f3 bao nhi\u00eau con kh\u00f4ng? b\u1ea1n h\u00e3y gi\u1ea3i th\u00edch nh\u00e9!<\/p>\n

<\/a>C\u00c2U 3:<\/h3>\n

4 anh ch\u1ecb em quy\u1ebft \u0111\u1ecbnh b\u0103ng qua m\u1ed9t con s\u00f4ng \u00edt n\u01b0\u1edbc v\u00e0o ban \u0111\u00eam n\u00ean c\u1ea7n m\u1ed9t \u0111\u00e8n pin.<\/p>\n

– Anh A qua s\u00f4ng ch\u1ec9 c\u00f3 1 ph\u00fat.<\/p>\n

– Anh B qua s\u00f4ng ch\u1ec9 c\u1ea7n 2 ph\u00fat.<\/p>\n

– Anh C qua s\u00f4ng m\u1ea5t 5 ph\u00fat.<\/p>\n

– Ch\u1ecb D qua s\u00f4ng m\u1ea5t 10 ph\u00fat.<\/p>\n

\u0110i\u1ec1u ki\u1ec7n: M\u1ed7i l\u1ea7n qua th\u00ec ph\u1ea3i qua 2 ng\u01b0\u1eddi, ai c\u0169ng \u0111\u01b0\u1ee3c, th\u1eddi gian T\u00ednh theo ng\u01b0\u1eddi \u0111i ch\u1eadm, v\u00ed d\u1ee5 anh a \u0111i chung v\u1edbi anh c th\u00ec ph\u1ea3i T\u00ednh qua s\u00f4ng m\u1ea5t 5 ph\u00fat.<\/p>\n

V\u00ec ch\u1ec9 c\u00f3 1 \u0111\u00e8n pin n\u00ean khi 2 ng\u01b0\u1eddi qua xong th\u00ec ph\u1ea3i c\u00f3 1 ng\u01b0\u1eddi \u0111em \u0111\u00e8n pin v\u1ec1 cho 2 ng\u01b0\u1eddi kh\u00e1c \u0111i qua.<\/p>\n

L\u00e0m th\u1ebf n\u00e0o trong v\u00f2ng 17 ph\u00fat c\u1ea3 4 ng\u01b0\u1eddi \u0111\u1ec1u qua s\u00f4ng?<\/p>\n

<\/a>C\u00c2U 4:<\/h3>\n

B\u1ea1n \u0111i v\u00e0o 1 c\u0103n nh\u00e0 c\u1ee7a c\u00e1c ch\u00fa l\u00f9n. Chi\u1ec1u cao c\u1ee7a c\u00e1c ch\u00fa nh\u01b0 sau:<\/p>\n

115cm, 112cm, 1m 07, 1200mm, 97cm, 990mm.<\/p>\n

H\u1ecfi ai cao nh\u1ea5t trong nh\u00e0?<\/p>\n

<\/a>C\u00c2U 5:<\/h3>\n

Ch\u1eafc b\u1ea1n h\u1ecdc s\u1ed1 La m\u00e3 r\u1ed3i ph\u1ea3i kh\u00f4ng?<\/p>\n

X – lll = Xll<\/p>\n

B\u1ea1n h\u00e3y di chuy\u1ec3n 1 que sao cho \u0111\u00fang v\u1edbi ph\u00e9p T\u00ednh nh\u00e9!<\/p>\n

<\/a>C\u00c2U 6:<\/h3>\n

Cong \u0111u\u00f4i th\u00ec l\u1edbn m\u00e0 cong \u0111\u1ea7u th\u00ec nh\u1ecf. L\u00e0 g\u00ec?<\/p>\n

H\u01af\u1edaNG D\u1eaaN – B\u00c0I GI\u1ea2I – \u0110\u00c1P S\u1ed0<\/h1>\n

<\/a>B\u00c0I S\u1ed0 37<\/h2>\n

<\/a>C\u00c2U 1:<\/h3>\n

\u0110\u00e1p s\u1ed1: H\u00ecnh B<\/p>\n

A v\u00e0 D c\u00f9ng lo\u1ea1i, C v\u00e0 E c\u00f9ng lo\u1ea1i. Hai nh\u00f3m n\u00e0y l\u00e0 s\u1ef1 \u0111\u1ea3o ng\u01b0\u1ee3c \u0111en tr\u1eafng c\u1ee7a c\u00e1c v\u00f2ng tr\u00f2n.<\/p>\n

<\/a>C\u00c2U 2:<\/h3>\n

B\u00e0i gi\u1ea3i:<\/p>\n

B\u00e1n \u0111\u1ebfn l\u1ea7n th\u1ee9 6 c\u00f2n l\u1ea1i 1 con ==> Sau l\u1ea7n b\u00e1n th\u1ee9 5 c\u00f2n (1 + 1\/2) x 2 = 3 con.<\/p>\n

Sau l\u1ea7n b\u00e1n th\u1ee9 4 c\u00f2n (3 + 1\/2) x 2 = 7 con.<\/p>\n

Sau l\u1ea7n b\u00e1n th\u1ee9 3 c\u00f2n (7 + 1\/2) x 2 = 15 con.<\/p>\n

Sau l\u1ea7n b\u00e1n th\u1ee9 2 c\u00f2n (15 + 1\/2 ) x 2 = 31 con.<\/p>\n

Sau l\u1ea7n b\u00e1n \u0111\u1ea7u ti\u00ean c\u00f2n (31 + 1\/2) x 2 = 63 con.<\/p>\n

V\u1eady ban \u0111\u1ea7u c\u00f3 (63 + 1\/2) x 2 = 127con.<\/p>\n

<\/a>C\u00c2U 3:<\/h3>\n

L\u01b0\u1ee3t 1: A v\u00e0 B c\u00f9ng qua m\u1ea5t 2 ph\u00fat, sau \u0111\u00f3 A m\u1ea5t 1 ph\u00fat quay v\u1ec1 \u0111\u01b0a \u0111\u00e8n pin => T\u1ed5ng c\u1ed9ng m\u1ea5t 3 ph\u00fat.<\/p>\n

L\u01b0\u1ee3t 2: C v\u00e0 D c\u00f9ng qua m\u1ea5t 10 ph\u00fat, sau \u0111\u00f3 B m\u1ea5t 2 ph\u00fat \u0111\u1ec3 c\u1ea7m \u0111\u00e8n v\u1ec1 => T\u1ed5ng c\u1ed9ng m\u1ea5t 12 ph\u00fat.<\/p>\n

L\u01b0\u1ee3t 3: A v\u00e0 B c\u00f9ng qua m\u1ea5t 2 ph\u00fat.<\/p>\n

T\u1ed5ng c\u1ed9ng 3 l\u01b0\u1ee3t \u0111i: 3 + 12 + 2 = 17 ph\u00fat<\/p>\n

<\/a>C\u00c2U 4:<\/h3>\n

\u0110\u00e1p s\u1ed1: B\u1ea1n l\u00e0 ng\u01b0\u1eddi cao nh\u1ea5t.<\/p>\n

<\/a>C\u00c2U 5:<\/h3>\n

\u0110\u00e1p \u00e1n: Que di\u00eam \u0111\u01b0\u1ee3c di chuy\u1ec3n nh\u01b0 sau:<\/p>\n

X – lll = Vll<\/p>\n

<\/a>C\u00c2U 6:<\/h3>\n

\u0110\u00e1p s\u1ed1:<\/p>\n

L\u00e0 s\u1ed1 9 v\u00e0 s\u1ed1 6<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00c2U 1: H\u00ecnh n\u00e0o kh\u00e1c lo\u1ea1i? C\u00c2U 2: M\u1ed9t \u00f4ng ch\u1ee7 n\u00f4ng tr\u1ea1i n\u1ecd c\u00f3 r\u1ea5t nhi\u1ec1u c\u1eebu. Bi\u1ebft r\u1eb1ng n\u1ebfu \u00f4ng ta b\u00e1n \u0111i m\u1ed9t n\u1eeda s\u1ed1 c\u1eebu c\u1ee7a m\u00ecnh c\u1ed9ng n\u1eeda con c\u1eebu. Sau \u0111\u00f3 l\u1ea1i b\u00e1n ti\u1ebfp m\u1ed9t n\u1eeda s\u1ed1 c\u1eebu c\u00f2n l\u1ea1i c\u1ed9ng n\u1eeda con c\u1eebu. \u00f4ng ta c\u1ee9 b\u00e1n \u0111\u1ebfn […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[47],"tags":[],"class_list":["post-25635","post","type-post","status-publish","format-standard","hentry","category-do-vui"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=25635"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25635\/revisions"}],"predecessor-version":[{"id":25637,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25635\/revisions\/25637"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=25635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=25635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=25635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}