{"id":17895,"date":"2024-04-13T11:17:21","date_gmt":"2024-04-13T11:17:21","guid":{"rendered":"https:\/\/soicau3101.minhngocxoso.com\/mach-ban-mot-so-dan-de-danh-quanh-nam-cuc-chuan\/"},"modified":"2024-04-13T11:17:21","modified_gmt":"2024-04-13T11:17:21","slug":"mach-ban-mot-so-dan-de-danh-quanh-nam-cuc-chuan","status":"publish","type":"post","link":"https:\/\/homnaydanhcongi.com\/mach-ban-mot-so-dan-de-danh-quanh-nam-cuc-chuan\/","title":{"rendered":"M\u00e1ch b\u1ea1n m\u1ed9t s\u1ed1 D\u00e0n \u0110\u1ec1 \u0111\u00e1nh quanh n\u0103m c\u1ef1c chu\u1ea9n"},"content":{"rendered":"
D\u00e0n \u0111\u1ec1 \u0111\u00e1nh quanh n\u0103m \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 t\u1eadp h\u1ee3p c\u1ee7a nh\u1eefng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n c\u00f9ng nhau trong c\u00f9ng m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh<\/strong><\/p>\n<\/div>\n Th\u1ef1c ch\u1ea5t \u0111\u00e2y l\u00e0 m\u1ed9t ki\u1ec3u soi c\u1ea7u gi\u1ea3i \u0111\u1eb7c bi\u1ec7t d\u1ef1a theo b\u1ea1c nh\u1edb l\u00f4 \u0111\u1ec1. C\u00e1ch n\u00e0y \u00e1p d\u1ee5ng cho x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc <\/span><\/strong>s\u1ebd mang l\u1ea1i hi\u1ec7u qu\u1ea3 cao h\u01a1n so v\u1edbi x\u1ed5 s\u1ed1 mi\u1ec1n Trung v\u00e0 mi\u1ec1n Nam<\/p>\n D\u00e0n \u0111\u1ec1 s\u1ebd c\u00f3 nguy\u00ean m\u1ed9t d\u00e0n bao g\u1ed3m nhi\u1ec1u s\u1ed1 v\u00e0 s\u1ed1 l\u01b0\u1ee3ng c\u00e1c s\u1ed1 trong 1 d\u00e0n c\u0169ng kh\u00e1c nhau. C\u00f3 d\u00e0n 10 s\u1ed1, 20, 36, 52\u2026.M\u1ed7i d\u00e0n \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n k\u1ef9 l\u01b0\u1ee3ng n\u00ean c\u00f3 s\u1ee9c m\u1ea1nh kh\u00e1c nhau. T\u00f9y thu\u1ed9c v\u00e0o ngu\u1ed3n v\u1ed1n v\u00e0 t\u00e2m l\u00fd c\u1ee7a ng\u01b0\u1eddi ch\u01a1i \u0111\u1ec3 l\u1ef1a ch\u1ecdn d\u00e0n \u0111\u1ec1 bao nhi\u00eau s\u1ed1 ch\u01a1i quanh n\u0103m cho ph\u00f9 h\u1ee3p.<\/p>\n Khi ch\u01a1i d\u00e0n \u0111\u1ec1, c\u00e0ng m\u00e1u l\u1eeda, c\u00e0ng c\u00f3 gan li\u1ec1u th\u00ec c\u00e0ng c\u00f3 kh\u1ea3 n\u0103ng \u0103n cao. M\u1eb7c d\u00f9 chi ph\u00ed b\u1ecf ra kh\u00f4ng nh\u1ecf nh\u01b0ng khi \u0103n th\u00ec s\u1ebd \u0103n \u0111\u1eadm. R\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i l\u00f4 \u0111\u1ec1 l\u00e0m gi\u00e0u th\u00e0nh c\u00f4ng t\u1eeb c\u00e1ch ch\u01a1i d\u00e0n \u0111\u1ec1 quanh n\u0103m n\u00e0y.<\/p>\n Nh\u00ecn v\u00e0o d\u00e0n \u0111\u1ec1 c\u00f3 t\u1eeb 20 s\u1ed1 tr\u1edf l\u00ean ch\u1eafc c\u00e1c b\u1ea1n s\u1ebd cho\u00e1ng kh\u00f4ng bi\u1ebft ch\u01a1i th\u1ebf n\u00e0o c\u00f3 l\u00e3i ph\u1ea3i kh\u00f4ng? B\u1ea1n h\u00e3y l\u00e0m theo c\u00e1ch n\u00e0y:<\/p>\n V\u00ed d\u1ee5 d\u00e0n \u0111\u1ec1 20 s\u1ed1 th\u00ec ta chia ra l\u00e0m 4 ph\u1ea7n, m\u1ed7i ph\u1ea7n t\u01b0\u01a1ng \u1ee9ng v\u1edbi\u00a05 s\u1ed1 ch\u1ecdn ng\u1eabu nhi\u00ean (lo\u1ea1i tr\u1eeb nh\u1eefng con s\u1ed1 \u0111\u00e3 ra trong b\u1ea3ng kqxs ng\u00e0y h\u00f4m tr\u01b0\u1edbc), m\u1ed7i ng\u00e0y \u0111\u00e1nh c\u1ee5m 5 s\u1ed1 \u0111\u00f3 (h\u00f4m sao ch\u1ecdn l\u1ea1i v\u00e0 lo\u1ea1i tr\u1eeb nh\u1eefng s\u1ed1 \u0111\u00e3 ra r\u1ed3i)<\/p>\n T\u01b0\u01a1ng t\u1ef1 v\u1edbi nh\u1eefng d\u00e0n \u0111\u1ec1 nhi\u1ec1u s\u1ed1 h\u01a1n nh\u01b0 50 s\u1ed1, 80 s\u1ed1 ho\u1eb7c d\u00e0n \u0111\u1ec1 60 con<\/p>\n L\u01b0u \u00fd:<\/p>\n – Trong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n tr\u00fang \u0111\u01b0\u1ee3c 1 con \u0111\u1ec1 th\u00ec x70 l\u1ea7n, v\u00ec v\u1eady mu\u1ed1n c\u00f3 l\u00e3i, nh\u1eefng s\u1ed1 b\u1ea1n \u0111\u00e1nh\u00a0kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p v\u01b0\u1ee3t qu\u00e1 70 con.<\/p>\n C\u00f3 r\u1ea5t nhi\u1ec1u d\u1ea1ng d\u00e0n \u0111\u1ec1 \u0111\u1ec3 ng\u01b0\u1eddi ch\u01a1i s\u1eed d\u1ee5ng \u0111\u00e1nh quanh n\u0103m. Trong \u0111\u00f3 b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o m\u1ed9t s\u1ed1 d\u00e0n \u0111\u1ec1 sau:<\/p>\n D\u00e0n \u0111\u1ec1 nh\u1ecf nh\u1ecf 25 s\u1ed1: \u0110\u00e2y l\u00e0 d\u00e0n \u0111\u1ec1 \u0111\u00e1nh quanh n\u0103m t\u1ed1t nh\u1ea5t m\u00e0 ch\u00fang t\u00f4i chia s\u1ebb \u0111\u1ebfn anh em. Ch\u00fang ta s\u1ebd c\u00f3 m\u1ed9t d\u00e0n nh\u01b0 sau: 00, 11, 22, 33, 44, 01, 10, 02, 20, 03, 30, 04, 40, 12, 21, 13, 31, 14, 41, 23, 32, 24, 42, 34, 43.<\/p>\n D\u00e0n \u0111\u1ec1 nh\u1ecf to 25 s\u1ed1: Ti\u1ebfp theo l\u00e0 d\u00e0n \u0111\u1ec1 \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi y\u00eau th\u00edch v\u00e0 th\u01b0\u1eddng xuy\u00ean \u0111\u00e1nh nh\u1ea5t : 05, 06, 07, 08, 09, 15, 16, 17, 18, 19, 25, 26, 27, 28, 29, 35, 36, 37,38, 39, 45, 46, 47, 48, 49.<\/p>\n D\u00e0n \u0111\u1ec1 chia 3 c\u00f3 34 s\u1ed1: V\u1edbi d\u00e0n \u0111\u1ec1 n\u00e0y c\u00e1c b\u1ea1n c\u1ea7n ph\u1ea3i t\u1eadp h\u1ee3p nh\u1eefng s\u1ed1 c\u00f3 th\u1ec3 chia h\u1ebft cho 3. \u0110\u00e2y l\u00e0 d\u00e0n \u0111\u1ec1 ch\u01a1i quanh n\u0103m c\u00f3 kh\u1ea3 n\u0103ng th\u1eafng h\u01a1n. Ch\u00fang ta s\u1ebd c\u1ea7n nhi\u1ec1u v\u1ed1n h\u01a1n. D\u00e0n \u0111\u1ec1 bao g\u1ed3m: 00, 03, 06, 09, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99.<\/p>\n D\u00e0n \u0111\u1ec1 chia 3 d\u01b0 1 c\u00f3 33 s\u1ed1: V\u1edbi d\u00e0n \u0111\u1ec1 n\u00e0y, ch\u00fang ra s\u1ebd l\u1ea5y c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean chia h\u1ebft cho 3 v\u00e0 c\u1ed9ng th\u00eam 1. C\u1ee5 th\u1ec3 c\u00f3 33 s\u1ed1 nh\u01b0 sau: 01, 04, 07, 10, 13, 16, 19, 22, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58, 61, 64, 67, 70, 73, 76, 79, 82, 85, 88, 91, 94, 97.<\/p>\n D\u00e0n \u0111\u1ec1 0-5 c\u00f3 36 s\u1ed1: \u0110\u00e2y l\u00e0 d\u00e0n \u0111\u1ec1 c\u00f3 nhi\u1ec1u s\u1ed1 h\u01a1n n\u00ean s\u1ed1 v\u1ed1n c\u1ea7n chu\u1ea9n b\u1ecb c\u0169ng ph\u1ea3i l\u1edbn h\u01a1n. Nh\u1eefng con s\u1ed1 trong d\u00e0n \u0111\u1ec1 n\u00e0y ph\u1ea3i \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u ki\u1ec7n l\u00e0 nh\u1ecf h\u01a1n 5 \u1edf c\u1ea3 h\u00e0ng ch\u1ee5c v\u00e0 h\u00e0ng \u0111\u01a1n v\u1ecb. D\u00e0n \u0111\u1ec1 36 s\u1ed1 g\u1ed3m: 00, 01, 02, 03, 04, 05, 10, 11, 12, 13, 14, 15, 20, 21, 22, 23, 24, 25, 30, 31, 32, 33,34, 35, 40, 41, 42, 43, 44, 45, 50, 51, 52, 53, 54, 55.<\/p>\n D\u00e0n \u0111\u1ec1 1-6 c\u00f3 36 s\u1ed1: Ch\u00fang ta c\u00f3 36 s\u1ed1 t\u1ef1 nhi\u00ean nh\u1ecf h\u01a1n 6 cho d\u00e0n \u0111\u1ec1 n\u00e0y bao g\u1ed3m: 11, 12, 13, 14, 15, 16, 21, 22, 23, 24, 25,26, 31, 32, 33, 34, 35, 36, 41, 42, 43, 44, 45, 46, 51, 52, 53, 54, 55, 56, 61, 62, 63, 64, 65, 66.<\/p>\n D\u00e0n \u0111\u1ec1 hi\u1ec7u 1 c\u00f3 20 s\u1ed1: Ch\u00fang ta c\u00f3 20 s\u1ed1 h\u1ee3p th\u00e0nh d\u00e0n \u0111\u1ec1 cho c\u00e1c b\u1ea1n l\u1ef1a ch\u1ecdn nh\u01b0 sau: 01, 10, 12, 21, 23, 32, 34, 43, 45, 54, 56, 65, 67, 76, 78, 87, 89 , 98, 90, 09.<\/p>\n D\u00e0n \u0111\u1ec1 hi\u1ec7u 2 v\u1edbi 20 s\u1ed1: Theo c\u00e1c cao th\u1ee7 th\u00ec d\u00e0n \u0111\u1ec1 n\u00e0y c\u00f3 hi\u1ec7u qu\u1ea3 chi\u1ebfn th\u1eafng kh\u00e1 cao. C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng v\u1edbi s\u1ed1 v\u1ed1n \u0111ang c\u00f3 c\u1ee7a m\u00ecnh. D\u00e0n \u0111\u1ec1 bao g\u1ed3m:\u00a0 02, 20, 24, 42, 46, 64, 68, 86, 80, 08, 13, 31, 35, 53, 57, 75, 79, 97, 91,19.<\/p>\n \u0110\u1ec3 \u0111\u00e1nh d\u00e0n \u0111\u1ec1 \u0111\u00e1nh quanh n\u0103m hi\u1ec7u qu\u1ea3 ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i chu\u1ea9n b\u1ecb ngu\u1ed3n v\u1ed1n l\u1edbn, \u0111\u1eb7c bi\u1ec7t l\u00e0 gi\u1eef v\u1eefng t\u00e2m l\u00fd duy tr\u00ec d\u00e0n \u0111\u1ec1 cho \u0111\u1ebfn ng\u00e0y cu\u1ed1i c\u00f9ng. B\u00e0i vi\u1ebft tr\u00ean \u0111\u00e2y \u00a0\u0111\u00e3 chia s\u1ebb \u0111\u1ebfn b\u1ea1n th\u00f4ng tin d\u00e0n \u0111\u1ec1 n\u00e0y l\u00e0 g\u00ec v\u00e0 c\u00e1ch ch\u01a1i nh\u01b0 th\u1ebf n\u00e0o. B\u00ean c\u1ea1nh \u0111\u00f3 c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u d\u00e0n \u0111\u1ec1 ch\u00ednh x\u00e1c \u0111\u1ec3 b\u1ea1n l\u1ef1a ch\u1ecdn s\u1eed d\u1ee5ng.<\/p>\n<\/div>\nC\u00e1ch ch\u01a1i d\u00e0n \u0111\u1ec1 \u0111\u00e1nh quanh n\u0103m<\/h2>\n
\nD\u00e0n \u0111\u1ec1 \u0111\u00e1nh quanh n\u0103m s\u1ebd gi\u00fap ae c\u01b0\u1eddi ph\u1edb l\u1edb<\/p>\nGi\u1edbi thi\u1ec7u m\u1ed9t s\u1ed1 d\u00e0n \u0111\u1ec1 ch\u01a1i quanh n\u0103m \u0111em l\u1ea1i chi\u1ebfn th\u1eafng l\u1edbn<\/h2>\n
D\u00e0n \u0111\u1ec1 25 s\u1ed1<\/h3>\n
D\u00e0n \u0111\u1ec1 chia 3 \u0111\u00e1nh quanh n\u0103m<\/h3>\n
D\u00e0n \u0111\u1ec1 36 s\u1ed1 \u0111\u1eb7c bi\u1ec7t ch\u01b0a bao gi\u1edd thua<\/h3>\n
D\u00e0n \u0111\u1ec1 hi\u1ec7u b\u1ed5 sung \u00edt v\u1ed1n<\/h3>\n
soi c\u1ea7u mi\u1ec1n b\u1eafc<\/span><\/strong><\/h2>\n