{"id":17687,"date":"2024-04-09T03:29:38","date_gmt":"2024-04-09T03:29:38","guid":{"rendered":"https:\/\/soicau6098.minhngocxoso.com\/du-doan-bach-thu-xo-so-mb-du-doan-dan-de-mien-bac\/"},"modified":"2024-04-09T03:29:38","modified_gmt":"2024-04-09T03:29:38","slug":"dan-de-va-bo-so-dau-cao-dit-chan-dau-cao-dit-le-la-gi","status":"publish","type":"post","link":"https:\/\/caulosieuchuan.top\/dan-de-va-bo-so-dau-cao-dit-chan-dau-cao-dit-le-la-gi\/","title":{"rendered":"d\u00e0n \u0111\u1ec1 v\u00e0 b\u1ed9 s\u1ed1 \u0111\u1ea7u cao \u0111\u00edt ch\u1eb5n \u2013 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb l\u00e0 g\u00ec?"},"content":{"rendered":"
D\u00e0n \u0111\u1ec1 \u0111\u1ea7u cao \u0111\u00edt ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb l\u00e0 2 d\u00e0n \u0111\u1ec1 \u201cremix\u201d t\u1eeb nh\u00f3m s\u1ed1 cao th\u1ea5p v\u00e0 nh\u00f3m s\u1ed1 ch\u1eb5n l\u1ebb. T\u00f9y thu\u1ed9c v\u00e0o nh\u1eadn \u0111\u1ecbnh v\u1ec1 c\u1ea7u c\u1ee7a m\u1ed7i ng\u01b0\u1eddi th\u00ec 2 d\u00e0n \u0111\u1ec1 n\u00e0y c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c v\u00e0o nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u1ea5t \u0111\u1ecbnh. V\u1eady nh\u1eefng s\u1ed1 \u0111\u1ec1, d\u00e0n \u0111\u1ec1 \u0111\u1ea7u cao \u0111\u00edt ch\u1eb5n v\u00e0 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb g\u1ed3m nh\u1eefng s\u1ed1 n\u00e0o? H\u00e3y t\u00ecm hi\u1ec3u c\u00f9ng \u1edf b\u00e0i vi\u1ebft n\u00e0y b\u1ea1n nh\u00e9.<\/p>\n
Nh\u00f3m s\u1ed1 th\u1ea5p g\u1ed3m 5 ch\u1eef s\u1ed1: 0, 1, 2, 3, 4<\/p>\n
Nh\u00f3m s\u1ed1 cao c\u0169ng g\u1ed3m 5 ch\u1eef s\u1ed1: 5, 6, 7, 8, 9<\/p>\n
Ta c\u0169ng c\u00f3 2 nh\u00f3m s\u1ed1 ch\u1eb5n v\u00e0 l\u1ebb nh\u01b0 sau: (B\u00e0i vi\u1ebft d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb, l\u1ebb ch\u1eb5n, ch\u1eb5n ch\u1eb5n, l\u1ebb l\u1ebb)<\/p>\n
Nh\u00f3m s\u1ed1 ch\u1eb5n: 0, 2, 4, 6, 8<\/p>\n
Nh\u00f3m s\u1ed1 l\u1ebb: 1, 3, 5, 7, 9<\/p>\n
T\u1eeb 2 nh\u00f3m s\u1ed1 n\u00e0y, ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i c\u00e1ch gh\u00e9p s\u1ed1 ta c\u00f3 th\u00eam 2 d\u00e0n \u0111\u1ec1 m\u1edbi sau.<\/p>\n
\u0110\u00e2y l\u00e0 t\u1eadp h\u1ee3p nh\u1eefng s\u1ed1 c\u00f3 s\u1ed1 h\u00e0ng ch\u1ee5c thu\u1ed9c nh\u00f3m s\u1ed1 cao ( \u0111\u1ea7u cao). V\u00e0 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb thu\u1ed9c nh\u00f3m s\u1ed1 ch\u1eb5n( \u0111\u00edt ch\u1eb5n). V\u1eady d\u00e0n \u0111\u1ec1 \u0111\u1ea7y cao \u0111\u00edt ch\u1eb5n g\u1ed3m 25 s\u1ed1 sau:<\/p>\n
50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98<\/p>\n
<\/p>\n
T\u01b0\u01a1ng t\u1ef1 nh\u01b0 tr\u00ean. D\u00e0n \u0111\u1ec1 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb c\u00f3 ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c thu\u1ed9c nh\u00f3m cao ( \u0111\u1ea7u cao). V\u00e0 ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb thu\u1ed9c nh\u00f3m l\u1ebb ( \u0111\u00edt l\u1ebb). D\u00e0n \u0111\u1ec1 n\u00e0y g\u1ed3m 25 s\u1ed1 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n
51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99<\/p>\n
Ngo\u00e0i d\u00e0n \u0111\u1ea7u cao \u0111\u00edt ch\u1eb5n v\u00e0 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb th\u00ec ta c\u00f2n c\u00f3 th\u1ec3 \u0111\u1ea3o v\u1ecb tr\u00ed c\u1ee7a c\u00e1c b\u1ed9 s\u1ed1 v\u00e0 c\u00f3 th\u00eam c\u00e1c d\u00e0n:<\/p>\n
Ngo\u00e0i 2 d\u00e0n \u0111\u1ea7u cao \u0111\u00edt ch\u1eb5n v\u00e0 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb. Ta c\u00f2n c\u00f3 th\u1ec3 \u0111\u1ea3o v\u1ecb tr\u00ed c\u1ee7a c\u00e1c b\u1ed9 s\u1ed1 ta c\u00f3 th\u00eam d\u00e0n \u0111\u1ec1 \u0111\u1ea7u th\u1ea5p \u0111\u00edt ch\u1eb5n:<\/p>\n
00,02,04,06,08,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48<\/p>\n
Ngo\u00e0i 2 d\u00e0n \u0111\u1ea7u cao \u0111\u00edt ch\u1eb5n v\u00e0 \u0111\u1ea7u cao \u0111\u00edt l\u1ebb. Ta c\u00f2n c\u00f3 th\u1ec3 \u0111\u1ea3o v\u1ecb tr\u00ed c\u1ee7a c\u00e1c b\u1ed9 s\u1ed1 ta c\u00f3 th\u00eam d\u00e0n \u0111\u1ec1 \u0111\u1ea7u th\u1ea5p \u0111\u00edt l\u1ebb:<\/p>\n
01,03,05,07,09,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49<\/p>\n
H\u00e3y y\u00ean t\u00e2m v\u1edbi c\u1ea7u m\u00e0 ch\u00fang t\u00f4i \u0111\u00e3 chia s\u1ebb, c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 xem l\u1ea1i c\u00e1c b\u00e0i tr\u01b0\u1edbc th\u00ec s\u1ebd r\u00f5. To\u00e0n b\u1ed9 soi c\u1ea7u c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec1u chu\u1ea9n v\u00e0 ch\u00ednh x\u00e1c. Nhi\u1ec1u b\u1ea1n \u0111\u00e3 th\u00e0nh c\u00f4ng r\u1ef1c r\u1ee1 v\u1edbi h\u1ec7 th\u1ed1ng c\u1ea7u c\u1ee7a ch\u00fang t\u00f4i. Ni\u1ec1m Vui c\u1ee7a b\u1ea1n l\u00e0 h\u1ea1nh ph\u00fac c\u1ee7a ch\u00fang t\u00f4i. L\u00e0m g\u00ec ch\u00fang t\u00f4i c\u0169ng \u0111\u1eb7t c\u00e1i t\u00e2m c\u1ee7a m\u00ecnh v\u00e0o \u0111\u00f3. B\u1ea1n h\u00e3y th\u1eed v\u00e0 t\u1eadn h\u01b0\u1edfng chi\u1ebfn th\u1eafng v\u1edbi t\u1eebng con s\u1ed1 ch\u00fang t\u00f4i \u0111\u01b0a ra!<\/p>\n