{"id":18800,"date":"2024-04-07T13:34:48","date_gmt":"2024-04-07T13:34:48","guid":{"rendered":"http:\/\/soicauchinhxacnhat.com\/?p=18800"},"modified":"2024-04-07T13:34:48","modified_gmt":"2024-04-07T13:34:48","slug":"luu-y-ban-can-biet-khi-tinh-toan-trong-choi-lo-de","status":"publish","type":"post","link":"https:\/\/soicauchinhxacnhat.com\/luu-y-ban-can-biet-khi-tinh-toan-trong-choi-lo-de\/","title":{"rendered":"L\u01b0u \u00fd b\u1ea1n c\u1ea7n bi\u1ebft khi t\u00ednh to\u00e1n trong ch\u01a1i l\u00f4 \u0111\u1ec1"},"content":{"rendered":"
Ch\u01a1i x\u1ed5 s\u1ed1 kh\u00f4ng ph\u1ea3i l\u00e0 vi\u1ec7c \u0111\u01a1n gi\u1ea3n ch\u1ec9 d\u1ef1a v\u00e0o may m\u1eafn. B\u1edfi v\u1eady c\u1ea7n d\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1 tr\u00fang th\u01b0\u1edfng \u0111\u1ec3 t\u0103ng th\u00eam c\u01a1 h\u1ed9i chi\u1ebfn th\u1eafng. C\u00f9ng soi c\u1ea7u<\/strong> xsmb<\/strong> t\u00ecm hi\u1ec3u ngay c\u00e1ch d\u1ef1 \u0111o\u00e1n d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 mang t\u00e0i l\u1ed9c v\u1ec1 nh\u00e0 n\u00e0o.<\/p>\n \u0110\u1ec3 soi c\u1ea7u l\u00f4 \u0111\u1ec1 h\u00f4m nay, ta x\u00e9t k\u1ebft qu\u1ea3 trong 2 h\u00f4m tr\u01b0\u1edbc. Gi\u1ea3 s\u1eed ng\u00e0y th\u1ee9 nh\u1ea5t c\u00f3 2 s\u1ed1 cu\u1ed1i l\u00e0 58 -> suy ra ng\u00e0y th\u1ee9 3 s\u1ebd c\u00f3 36 ( v\u00ec 5->3 ; 6 )<\/p>\n VD c\u1ee5 th\u1ec3 : H\u00f4m nay \u0110\u1ec1 v\u1ec1 32 -> suy ra ng\u00e0y kia s\u1ebd c\u00f3 l\u00f4 15 ( v\u00ec 3->1 ; 2->5)<\/p>\n Tuy nhi\u00ean, c\u00e1ch t\u00ednh n\u00e0y ch\u1ec9 ch\u00ednh x\u00e1c v\u1edbi c\u00e1c gi\u1ea3i \u0111\u1eb7c bi\u1ec7t ng\u00e0y th\u1ee9 Nh\u1ea5t c\u00f3 t\u1ed5ng t\u1eeb 20 -> 30.<\/p>\n Quy \u0111\u1ecbnh \u0111\u1ec3 ti\u1ec7n cho vi\u1ec7c tr\u00ecnh b\u00e0y t\u00ednh to\u00e1n d\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1 tr\u00fang th\u01b0\u1edfng:<\/p>\n MN = \u0110\u1ec1 ng\u00e0y 1<\/p>\n CD = \u0110\u1ec1 ng\u00e0y 2<\/p>\n AB = L\u00f4 ng\u00e0y 3 (c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c)<\/p>\n A, B l\u00e0 kh\u00e1c nhau n\u1ebfu trong c\u00f9ng m\u1ed9t s\u1ed1. C\u00f2n \u1edf 2 ng\u00e0y kh\u00e1c nhau th\u00ec c\u00f3 th\u1ec3 gi\u1ed1ng nhau.<\/p>\n VD: MN = 35 ( 3#5) CD = 39 ( 3#9, C=M)<\/p>\n C\u1ea7n nh\u1edb: \u1edf \u0111\u00e2y, CD ch\u01b0a c\u00f3 quan h\u1ec7 g\u00ec v\u1edbi nhau.<\/p>\n Trong t\u1eebng ng\u00e0y c\u1ee5 th\u1ec3 ta c\u00f3:<\/p>\n T\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t = 20 ; 25<\/p>\n Ng\u00e0y 1 c\u00f3 \u0110\u1ec1 = MN -> suy ra l\u00f4 ng\u00e0y ba = AB => Ta \u0111\u00e1nh BA<\/p>\n T\u1ed5ng \u0111\u1eb7c bi\u1ec7t = s\u1ed1 ch\u1eb5n ( 22, 24, 26, 28)<\/p>\n Ng\u00e0y 1 \u0111\u1ec1 = MN -> ta d\u1ef1 \u0111o\u00e1n L\u00f4 ng\u00e0y 3 = AB<\/p>\n Ta l\u1ea5y 10 \u2013 B = I v\u00e0 gi\u1eef nguy\u00ean A => cu\u1ed1i c\u00f9ng ta \u0111\u00e1nh AI<\/p>\n T\u1ed5ng b\u1eb1ng s\u1ed1 l\u1ebb v\u00e0 30 (21, 23, 29, 30)<\/p>\n Ng\u00e0y 1 \u0111\u1ec3 = MN -> d\u1ef1 \u0111o\u00e1n l\u00f4 \u0111\u1ec1 ng\u00e0y ba = AB => v\u00e0 \u0111\u00e1nh AB<\/p>\nD\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1 tr\u00fang th\u01b0\u1edfng quan s\u00e1t<\/h2>\n