{"id":18107,"date":"2024-04-04T18:03:51","date_gmt":"2024-04-04T18:03:51","guid":{"rendered":"https:\/\/soicau5012.minhngocxoso.com\/?p=18107"},"modified":"2024-04-04T18:03:51","modified_gmt":"2024-04-04T18:03:51","slug":"tong-hop-day-du-cac-dan-de-dac-biet-2024","status":"publish","type":"post","link":"https:\/\/soicaubachthulo88.com\/tong-hop-day-du-cac-dan-de-dac-biet-2024\/","title":{"rendered":"t\u1ed5ng h\u1ee3p \u0111\u1ea7y \u0111\u1ee7 c\u00e1c d\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t 2024"},"content":{"rendered":"
<\/p>\n\n\n
Nh\u00ecn chung, c\u00e1c lo\u1ea1i d\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t \u0111\u00e3 c\u00f3 t\u1eeb l\u00e2u v\u1edbi m\u1ee5c \u0111\u00edch l\u00e0 l\u00e0m t\u0103ng kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng c\u1ee7a ng\u01b0\u1eddi ch\u01a1i. C\u00e1c lo\u1ea1i d\u00e0n \u0111\u1ec1 n\u00e0y kh\u00e1 hay, bao g\u1ed3m d\u00e0n 49 qu\u00e2n mi\u1ec1n b\u1eafc, d\u00e0n \u0111\u1ec1 20 s\u1ed1, 30 s\u1ed1 v\u1edbi c\u00e1c khung th\u1eddi gian 30 ng\u00e0y, 40 ng\u00e0y,\u2026 Ch\u00fang l\u00e0 nh\u1eefng d\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 ng\u01b0\u1eddi ch\u01a1i xem theo c\u00e1ch \u0111\u00e1nh.<\/p>\n\n\n\n
Do \u0111\u00f3, h\u00f4m nay th\u00ec c\u00e1c b\u1ea1n h\u00e3y c\u00f9ng v\u1edbi th\u1ee7 thu\u1eadt nh\u00e0 c\u00e1i t\u00ecm hi\u1ec3u v\u1ec1 c\u00e1c lo\u1ea1i d\u00e0n \u0111\u1ec1 n\u00e0y nh\u00e9.<\/p>\n\n\n\n
V\u1edbi c\u00e1i ch\u1eef \u201c\u0111\u1eb7c bi\u1ec7t\u201d theo sau, nhi\u1ec1u ng\u01b0\u1eddi m\u1edbi ch\u01a1i ch\u1eafc h\u1eb3n bi\u1ebft r\u1eb1ng n\u00f3 l\u00e0 m\u1ed9t d\u00e0n s\u1ed1 kh\u00f4ng gi\u1ed1ng nh\u01b0 b\u00ecnh th\u01b0\u1eddng. N\u1ebfu ch\u01a1i ch\u1eafc tay h\u01a1n, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 t\u1ef1 t\u1ea1o ra c\u00e1c d\u00e0n \u0111\u1eb7c bi\u1ec7t c\u1ee7a ri\u00eang m\u00ecnh.<\/p>\n\n\n\n
M\u1ed9t \u01b0u \u0111i\u1ec3m c\u1ee7a lo\u1ea1i d\u00e0n s\u1ed1 l\u00e0 t\u1ef7 l\u1ec7 tr\u00fang cao (v\u00ec m\u00ecnh ch\u01a1i nhi\u1ec1u m\u00e0). V\u00e0 do \u0111\u00f3, nh\u01b0\u1ee3c \u0111i\u1ec3m s\u1ebd l\u1ea1i l\u00e0 v\u1ea5n \u0111\u1ec1 ch\u00ednh: Ti\u1ec1n x\u00e1c (ti\u1ec1n v\u1ed1n).<\/p>\n\n\n\n
B\u1ea1n c\u00f3 th\u1ec3 chia s\u1ed1 ti\u1ec1n m\u00e0 b\u1ea1n \u0111\u00e1nh theo nhi\u1ec1u m\u1ee9c kh\u00e1c nhau t\u01b0\u01a1ng \u1ee9ng v\u1edbi vi\u1ec7c tin t\u01b0\u1edfng t\u1ec9 l\u1ec7 con n\u00e0o s\u1ebd v\u1ec1 nhi\u1ec1u h\u01a1n.<\/p>\n\n\n\n
Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh l\u00f4 d\u00e0n n\u00e0y kh\u00f4ng gi\u1ed1ng v\u1edbi c\u00e1ch \u0111\u00e1nh l\u00f4 xi\u00ean, m\u1eb7c d\u00f9 c\u0169ng l\u00e0 \u0111\u00e1nh nhi\u1ec1u con m\u1ed9t l\u00fac. B\u1ea3n ch\u1ea5t c\u1ee7a n\u00f3 ch\u00ednh l\u00e0 \u0111\u00e1nh bao nhi\u00eau con th\u00ec h\u00f2a v\u1ed1n ho\u1eb7c th\u1eafng \u00edt (ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u00e1nh c\u1ea3 d\u00e0n m\u00e0 l\u1ed7 ti\u1ec1n v\u1ed1n).<\/p>\n\n\n\n
\u0110\u00e1nh l\u00f4 \u0111\u1ec1 d\u00e0n b\u1ea3n ch\u1ea5t th\u00ec ch\u00ednh l\u00e0 \u0111\u00e1nh bao l\u00f4 nhi\u1ec1u con m\u1ed9t l\u00fac theo m\u1ed9t d\u00e0n n\u00e0o \u0111\u00f3. \u0110\u00e1nh nh\u01b0 v\u1eady kh\u00e1 l\u00e0 t\u1ed1n k\u00e9m n\u00ean anh em c\u1ea7n ph\u1ea3i th\u1eadt c\u1ea9n th\u1eadn l\u1ef1a d\u00e0n tr\u01b0\u1edbc khi ra tay mua b\u1ea5t k\u1ef3 con l\u00f4 \u0111\u1ec1 n\u00e0o!<\/p>\n\n\n\n
V\u00e0 d\u00e0n cao nh\u1ea5t ch\u00ednh l\u00e0 d\u00e0n 49 qu\u00e2n mi\u1ec1n b\u1eafc. V\u1edbi d\u00e0n n\u00e0y th\u00ec anh em c\u1ea7n bi\u1ebft t\u00ednh to\u00e1n v\u00e0 ch\u1ecdn l\u1ef1a k\u1ef9 c\u00e0ng v\u00ec kh\u00f4ng ph\u1ea3i ng\u00e0y n\u00e0o n\u00f3 c\u0169ng c\u00f3. N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ghi ch\u00e9p, t\u00ednh to\u00e1n. V\u00e0 d\u01b0\u1edbi \u0111\u00e2y ch\u00ednh l\u00e0 c\u00e1c lo\u1ea1i d\u00e0n l\u00f4 ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n
D\u00e0n \u0111\u1ec1 4 con s\u1ed1 mi\u1ec1n B\u1eafc (XSKTMB) nu\u00f4i trong khung 3 ng\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi c\u00e1c s\u1ed1 co1l i\u00ean quan \u0111\u1ebfn nhau. C\u1ee4 th\u1ec3 th\u00ec 4 d\u00e0n \u0111\u1ec1 c\u00f3 4 s\u1ed1 nh\u01b0 sau:<\/p>\n\n\n\n
Anh em s\u1eed d\u1ee5ng b\u1ed9 n\u00e0y khi anh em th\u1ea5y \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t \u0111\u1ec1 \u0111\u1ea7u ch\u1ea1m \u0111u\u00f4i l\u00e0 bao nhi\u00eau. D\u00e0n n\u00e0y c\u00f3 th\u1ec3 \u0111\u00e1nh trong th\u1eddi gian 3 ng\u00e0y (kh\u00f4ng h\u01a1n). C\u00e1c anh em c\u00f3 th\u1ec3 ch\u01a1i nhi\u1ec1u d\u00e0n \u0111\u1ec3 t\u0103ng t\u1ef7 l\u1ec7 tr\u00fang l\u00ean cao.<\/p>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 n\u00e0y th\u00ec c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 t\u00ednh. V\u00e0 \u0111\u00e2y l\u00e0 c\u00e1ch t\u00ednh:<\/p>\n\n\n\n
V\u00ed d\u1ee5: D\u00e0n 6 s\u1ed1 85: 68 \u2013 86 \u2013 88 \u2013 66 \u2013 13 (b\u00f3ng c\u1ee7a 68) \u2013 31 (b\u00f2ng c\u1ee7a 86). C\u00e1ch t\u00ednh b\u00f3ng l\u00e0 b\u1ea1n l\u1ea5y s\u1ed1 \u0111\u00f3 tr\u1eeb \u0111i 5 ho\u1eb7c c\u1ed9ng th\u00eam 5 <\/p>\n\n\n\n
B\u1ea1n ph\u1ea3i c\u00f3 lu\u00f4n con s\u1ed1 \u0111\u1ea3o ng\u01b0\u1ee3c v\u00ec l\u1ee1 c\u00f3 ra m\u1ed9t c\u1eb7p th\u00ec b\u1ea1n \u0103n h\u1ebft, ho\u1eb7c n\u1ebfu ra m\u1ed9t con th\u00ec b\u1ea1n c\u00f2n c\u00f3 th\u1ec3 g\u1ee1 \u0111\u01b0\u1ee3c (ch\u1ee9 ch\u1ec9 \u0111\u00e1nh m\u1ed9t con m\u00e0 n\u00f3 l\u1ea1i ra l\u00f4 l\u1ed9n ng\u01b0\u1ee3c th\u00ec b\u1ea1n ch\u1eb3ng c\u00f3 g\u00ec).<\/p>\n\n\n\n
Th\u1eddi gian nu\u00f4i lo\u1ea1i d\u00e0n n\u00e0y l\u00e0 t\u1eeb 5 \u2013 10 ng\u00e0y, c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n v\u00e0 c\u00e1ch t\u00ednh c\u1ee7a t\u1eebng lo\u1ea1i n\u00e0y nh\u01b0 sau:<\/p>\n\n\n\n
L\u1eadp d\u00e0n \u0111\u1ec1 k\u00e9p 10 s\u1ed1 nu\u00f4i 3 ng\u00e0y: 00-11-22-33-44-55-66-77-88-99<\/p>\n\n\n\n
D\u00e0n \u0111\u1ec1 n\u00e0y c\u00f2n c\u00f3 t\u00ean g\u1ecdi l\u00e0 d\u00e0n \u0111\u1ec1 hi\u1ec7u 0 v\u00ec hai con \u0111\u1ea7u v\u00e0 \u0111u\u00f4i tr\u1eeb nhau th\u00ec ra b\u1eb1ng 0. V\u00e0 c\u00e1ch t\u00ednh c\u00e1c d\u00e0n hi\u1ec7u s\u1ed1 kh\u00e1c nhau \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea b\u00ean d\u01b0\u1edbi:<\/p>\n\n\n\n
N\u1ebfu \u0111\u1ec1 v\u1ec1 h\u00f4m tr\u01b0\u1edbc d\u1ea1ng AB th\u00ec l\u1ea5y A-1 ta \u0111\u01b0\u1ee3c hi\u1ec7u C. V\u00ed d\u1ee5: \u0110\u1ec1 v\u1ec1 45 th\u00ec ta c\u00f3 4-1=3.<\/p>\n\n\n\n
L\u1eadp d\u00e0n \u0111\u1ec1 10 s\u1ed1 c\u00f3 \u0111u\u00f4i l\u00e0 C. V\u00ed d\u1ee5: L\u1eadp d\u00e0n \u0111\u1ec1 \u0111u\u00f4i 3: 03-13-23-33-43-53-63-73-83-93<\/p>\n\n\n\n
V\u1edbi c\u00e1ch t\u00ednh t\u01b0\u01a1ng t\u1ef1, ch\u00fang ta c\u00f3 m\u1ed9t d\u00e0n l\u00f4 nh\u01b0 sau: 50-05-61-16-72-27-83-38-94-49<\/p>\n\n\n\n
Th\u1eddi gian nu\u00f4i c\u1ee7a d\u00e0n n\u00e0y l\u00e0 cao nh\u1ea5t 5 ng\u00e0y trong m\u1ed9t tu\u1ea7n. L\u1ecdc \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1eb7c bi\u1ec7t 16 s\u1ed1 th\u00ec anh em d\u00f9ng c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch c\u1ee7a web R\u1ed3ng B\u1ea1ch Kim v\u00e0 l\u1ef1a ch\u1ecdn v\u00e0o th\u1ed1ng k\u00ea t\u1ed5ng h\u1ee3p. V\u00e0 sau \u0111\u00f3 ch\u1ecdn nh\u01b0 sau:<\/p>\n\n\n\n
Chi ti\u1ebft c\u00e1ch l\u1ecdc d\u00e0n \u0111\u1ec1 16 s\u1ed1 nu\u00f4i khung 5 ng\u00e0y nh\u01b0 sau:<\/p>\n\n\n\n
Nh\u01b0 v\u1eady l\u00e0 ta \u0111\u00e3 l\u1eadp \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 MB 16s nu\u00f4i trong v\u00f2ng max 5 ng\u00e0y tu\u1ea7n sau b\u1ea5t b\u1ea1i. C\u00e1c b\u00e1c l\u01b0u \u00fd h\u1ed9 l\u00e0 n\u1ebfu \u0111\u1ec1 v\u1ec1 v\u00e0 \u0103n \u0111\u1ee7 b\u00f9 v\u1ed1n c\u00f3 l\u1eddi th\u00ec m\u00ecnh n\u00ean d\u1eebng l\u1ea1i nh\u00e9.<\/p>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 20 con s\u1ed1 nu\u00f4i khung 3 \u2013 5 ng\u00e0y<\/strong> v\u1edbi ph\u01b0\u01a1ng ph\u00e1p t\u1eeb R\u1ed3ng B\u1ea1ch Kim b\u1ea5t b\u1ea1i 2024. Anh em c\u00f3 th\u1ec3 ch\u1ecdn \u0111\u00e1nh d\u00e0n \u0111\u1ec1 theo d\u1ea5u hi\u1ec7u c\u00f3 s\u1eb5n, ho\u1eb7c n\u1ebfu kh\u00f4ng mu\u1ed1n \u0111\u00e1nh theo d\u00e0n c\u00f3 s\u1eb5n th\u00ec c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1ch l\u1eadp d\u00e0n theo \u0111\u1ea7u \u0111u\u00f4i.<\/p>\n\n\n\n T\u00ednh ch\u1ea5t c\u1ee7a d\u00e0n \u0111\u1ec1 hi\u1ec7u b\u1ed5 sung l\u00e0 2 ch\u1eef s\u1ed1 \u0111\u1ea7u \u0111u\u00f4i c\u00e1ch nhau \u0111\u00fang 1 \u0111\u01a1n v\u1ecb \u0111\u1ecbnh s\u1eb5n. T\u1ed5ng c\u1ed9ng c\u00f3 4 d\u00e0n \u0111\u1ec1 t\u00ednh theo hi\u1ec7u 2 ch\u1eef s\u1ed1 \u0111\u1ea7u \u0111u\u00f4i. Chi ti\u1ebft nh\u01b0 sau:<\/p>\n\n\n\n 01 10 21 12 32 23 34 43 54 45 56 65 67 76 78 87 89 98<\/p>\n\n\n\n 02 20 31 13 24 42 35 53 64 46 75 57 86 68 97 79 91 19<\/p>\n\n\n\n 03 30 14 41 25 52 63 36 74 47 85 58 96 69 07 70 81 18<\/p>\n\n\n\n 04 40 51 15 62 26 73 37 84 48 95 59 60 06 71 17 28 82<\/p>\n\n\n\n \u0110\u1ec3 soi d\u00e0n \u0111\u1ec1 20 s\u1ed1, anh em c\u1ea7n ti\u1ebfn h\u00e0nh l\u1ecdc ra 5 con s\u1ed1 \u0111\u1ea7u v\u00e0 4 con s\u1ed1 \u0111u\u00f4i hay v\u1ec1 nh\u1ea5t trong th\u1eddi gian 30 l\u1ea7n quay tr\u1edf l\u1ea1i \u0111\u00e2y.<\/p>\n\n\n\n Ch\u00fang ta s\u1ebd ti\u1ebfn h\u00e0nh gh\u00e9p c\u00e1c con s\u1ed1 \u0111\u00f3 th\u00e0nh c\u1eb7p theo quy t\u1eafc nh\u1ea5t \u0111\u1ecbnh. T\u1eeb \u0111\u00f3 t\u1ea1o ra \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 20 s\u1ed1 b\u1ea5t t\u1eed \u0111\u00e1nh trong v\u00f2ng 3 ng\u00e0y s\u1eafp t\u1edbi.<\/p>\n\n\n\n V\u00ed d\u1ee5 th\u1ed1ng k\u00ea \u0111\u1ea7u \u0111u\u00f4i trong v\u00f2ng 30 ng\u00e0y t\u00ednh t\u1edbi ng\u00e0y 28\/06\/2024 ta c\u00f3:<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 20 s\u1ed1 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u00e1nh khung 3 ng\u00e0y ho\u1eb7c khung 5 ng\u00e0y t\u00f9y v\u1ed1n c\u00e1c b\u00e1c. Tuy nhi\u00ean n\u1ebfu nhi\u1ec1u v\u1ed1n th\u00ec c\u00e1c b\u00e1c v\u1eabn n\u00ean nu\u00f4i khung 5 ng\u00e0y th\u00ec h\u01a1n. C\u00f3 th\u1ec3 \u00e1p d\u1ee5ng c\u00e1ch gh\u00e9p d\u00e0n \u0111\u1ec1 20s n\u00e0y cho nhi\u1ec1u \u0111\u00e0i. Tuy nhi\u00ean t\u1ed1t nh\u1ea5t l\u00e0 \u00e1p d\u1ee5ng cho \u0111\u00e0i x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc.<\/p>\n\n\n\n V\u1edbi d\u00e0n n\u00e0y th\u00ec b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00e1nh quanh n\u0103m su\u1ed1t th\u00e1ng, c\u00e1c con s\u1ed1 trong d\u00e0n \u0111\u1ec1 n\u00e0y. V\u00e0 c\u00e1c con s\u1ed1 thu\u1ed9c d\u00e0n n\u00e0y to\u00e0n thu\u1ed9c lo\u1ea1i \u201cv\u1ec1 cao\u201d. Do \u0111\u00f3, n\u1ebfu s\u1eed d\u1ee5ng trong v\u00f2ng 1 tu\u1ea7n th\u00ec hi\u1ec7u qu\u1ea3 t\u01b0\u01a1ng \u0111\u1ed1i l\u00e0 cao.<\/p>\n\n\n\n V\u00e0 lo\u1ea1i d\u00e0n n\u00e0y th\u01b0\u1eddng n\u1ed5 v\u00e0o c\u00e1c ng\u00e0y g\u1ea7n cu\u1ed1i tu\u1ea7n nh\u01b0 th\u1ee9 4-5-6. V\u00e0 sau \u0111\u00e2y l\u00e0 d\u00e0n 24 s\u1ed1 \u0111\u00e1nh quanh n\u0103m cho b\u1ea1n:<\/p>\n\n\n\n 12 21, 18 81, 23 32, 27 72, 28 82, 29 92, 37 73, 38 83, 39 93, 78 87, 79 97, 89 98<\/p>\n\n\n\n Ghi c\u00e1ch ra nh\u01b0 th\u1ebf n\u00e0y \u0111\u1ec3 b\u1ea1n d\u1ec5 d\u00e0ng quan s\u00e1t cho ph\u00f9 h\u1ee3p nh\u00e9!<\/p>\n\n\n\n D\u00e0n l\u00f4 \u0111\u1ec1 25 qu\u00e2n s\u1ed1 nu\u00f4i \u0111\u00e1nh quanh n\u0103m trong 100 con s\u1ed1 l\u00f4 \u0111\u1ec1, ch\u00fang ta c\u00f2n c\u00f3 th\u1ec3 chia n\u00f3 ra d\u1ef1a theo t\u00ednh ch\u1ea5t c\u1ee7a b\u1ed9 s\u1ed1. Theo nguy\u00ean t\u1eafc s\u1ed1 l\u1edbn s\u1ed1 b\u00e9 th\u00ec ta c\u00f3:<\/p>\n\n\n\n D\u00e0n l\u00f4 \u0111\u1ec1 25 s\u1ed1 l\u00e0 t\u1ed5ng h\u1ee3p th\u1ed1ng k\u00ea nh\u1eefng b\u1ed9 s\u1ed1 mang nh\u1eefng t\u00ednh ch\u1ea5t nh\u01b0 tr\u00ean. Ta c\u00f3 th\u1ec3 ph\u00e2n lo\u1ea1i c\u00e1c lo\u1ea1i d\u00e0n \u0111\u1ec1 25 s\u1ed1 nh\u01b0 sau:<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 25 s\u1ed1 n\u00e0y l\u00e0 c\u1ed1 \u0111\u1ecbnh, c\u00f3 th\u1ec3 d\u00f9ng \u0111\u00e1nh quanh n\u0103m. C\u00e1c ace c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nu\u00f4i khung 3 ng\u00e0y ho\u1eb7c khung 5 ng\u00e0y t\u00f9y v\u1ed1n. Ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u1eabn l\u00e0 d\u00f9ng d\u00e0n \u0111\u1eb7c bi\u1ec7t 25 s\u1ed1 nu\u00f4i 5 ng\u00e0y.<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 30 s\u1ed1 b\u1ea5t b\u1ea1i khung 3 ng\u00e0y c\u0169ng nh\u01b0 c\u00e1ch l\u1eadp d\u00e0n \u0111\u1ec1 30s \u0111\u00e1nh trong khung 3 ng\u00e0y c\u0169ng gi\u1ed1ng v\u1edbi c\u00e1ch l\u1eadp d\u00e0n 20s v\u00e0 d\u00e0n 36s. Hi\u1ec7u qu\u1ea3 c\u1ee7a bi\u1ebfn th\u1ec3 n\u00e0y c\u00f3 th\u1ec3 n\u00f3i l\u00e0 su\u00fdt so\u00e1t v\u1edbi 2 d\u00e0n anh ch\u1ecb c\u1ee7a n\u00f3 tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n\n\n\n Anh em ti\u1ebfn h\u00e0nh ch\u1ecdn ra 6 s\u1ed1 \u0111\u1ea7u v\u00e0 5 s\u1ed1 \u0111u\u00f4i v\u1ec1 nhi\u1ec1u nh\u1ea5t g\u1ea7n \u0111\u00e2y. Sau \u0111\u00f3 ti\u1ebfn h\u00e0nh gh\u00e9p ch\u00fang l\u1ea1i v\u1edbi nhau \u0111\u1ec1 t\u1ea1o d\u00e0n \u0111\u1ec1 30s. C\u00e1ch th\u1ee9c gh\u00e9p xin m\u1eddi l\u01b0\u1edbt l\u1ea1i c\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 20s v\u00e0 36s \u1edf tr\u00ean.<\/p>\n\n\n\n D\u00e0n 34 s\u1ed1 mi\u1ec1n B\u1eafc hay ra nh\u1ea5t l\u00e0 d\u00e0n \u0111\u1ec1 c\u00f3 d\u1ea1ng chia h\u1ebft cho 3. D\u00e0n \u0111\u1ec1 n\u00e0y anh em c\u00f3 th\u1ec3 xem chi ti\u1ebft c\u00e1ch t\u00ednh trong v\u00e0i vi\u1ebft v\u1ec1 T\u1ed5ng \u0111\u1ec1.<\/p>\n\n\n\n D\u00e0n 34 s\u1ed1 mi\u1ec1n B\u1eafc c\u00f3: 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\n\n\n D\u00e0n \u0111\u1ec1 36s kh\u00e1 l\u00e0 \u0111\u01b0\u1ee3c l\u00f2ng anh em ch\u01a1i \u0111\u1ec1. Ch\u1ec9 c\u1ea7n l\u01b0\u1edbt m\u1ed9t v\u00f2ng tr\u00ean m\u1ea1ng nh\u1eefng nh\u00e0 t\u1ea1o d\u00e0n chuy\u00ean nghi\u1ec7p th\u00ec c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u k\u00eanh soi c\u1ea7u ch\u1ecdn soi d\u00e0n n\u00e0y. \u0110\u01a1n c\u1eed nh\u01b0 k\u00eanh D\u00e0n \u0111\u1ec1 Ph\u1ea1m Tu\u1ea5n. C\u00e1c b\u00e1c ch\u1eafc c\u0169ng hay v\u00e0o coi, nh\u01b0ng h\u1eb3n l\u00e0 kh\u00f4ng bi\u1ebft l\u00e0m th\u1ebf n\u00e0o ng\u01b0\u1eddi ta c\u00f3 c\u00e1c d\u00e0n \u0111\u1ec1 hay nh\u01b0 v\u1eady.<\/p>\n\n\n\n \u0110\u1ec3 t\u1ea1o d\u00e0n \u0111\u1ec1 36 s\u1ed1 chu\u1ea9n-ch\u1ea5t-R\u1ed3ng B\u1ea1ch Kim th\u00ec ch\u00fang ta c\u00f3 kh\u00e1 l\u00e0 nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p. D\u01b0\u1edbi \u0111\u00e2y xin \u0111\u01b0\u1ee3c g\u1eedi t\u1edbi anh em 3 ph\u01b0\u01a1ng ph\u00e1p ch\u00ednh, k\u00e8m ch\u00fa gi\u1ea3i v\u00e0 v\u00ed d\u1ee5 \u0111\u1ec3 anh em d\u1ec5 h\u00ecnh dung h\u01a1n.<\/p>\n\n\n\n Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u1ed1ng v\u1edbi ph\u01b0\u01a1ng ph\u00e1p soi d\u00e0n \u0111\u1ec1 20s nh\u01b0ng c\u00f3 bi\u1ebfn t\u1ea5u thay \u0111\u1ed5i. Thay v\u00ec gh\u00e9p 5 s\u1ed1 \u0111\u1ea7u v\u1edbi 4 s\u1ed1 \u0111u\u00f4i ch\u00fang ta s\u1ebd gh\u00e9p 6 s\u1ed1 \u0111\u1ea7u v\u1edbi 6 s\u1ed1 \u0111u\u00f4i. \u0110\u1ec3 d\u1ec5 nh\u1edb th\u00ec anh em c\u00f3 th\u1ec3 nh\u1ea9m t\u00ednh 5\u00d74=20 s\u1ed1; 6\u00d76= 36 s\u1ed1.<\/p>\n\n\n\n V\u00ed d\u1ee5 c\u1ee5 th\u1ec3: 30 ng\u00e0y th\u1ed1ng k\u00ea \u0111\u1ea7u \u0111u\u00f4i t\u00ednh t\u1edbi ng\u00e0y 28\/06\/2024 ch\u00fang ta c\u00f3:<\/p>\n\n\n\n V\u1edbi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, anh em ch\u00fang ta t\u00ednh theo t\u1ed5ng 2 ch\u1eef s\u1ed1 con \u0111\u1ec1 g\u1ea7n nh\u1ea5t v\u00e0 so s\u00e1nh v\u1edbi 10 \u0111\u1ec3 l\u1ea5y d\u00e0n. T\u1ee9c l\u00e0:<\/p>\n\n\n\n V\u00ed d\u1ee5: k\u1ebft qu\u1ea3 XSMB ng\u00e0y 27\/06\/2024, gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 51776. T\u1ed5ng \u0111\u1ec1 7+6= 5. V\u1eady anh em c\u00f3 th\u1ec3 l\u1ea5y d\u00e0n \u0111\u1ec1 b\u00e9 h\u01a1n 10 \u1edf tr\u00ean \u0111\u1ec3 \u0111\u00e1nh.<\/p>\n\n\n\n Theo c\u00f4ng th\u1ee9c tr\u00ean, anh em c\u00f3 th\u1ec3 thay s\u1ed1 v\u00e0o x \u0111\u1ec3 t\u1ea1o ra d\u00e0n m\u1edbi.V\u00ed d\u1ee5 v\u1edbi x l\u00e0 0, ta c\u00f3 d\u00e0n 0 \u2013 (0+5). V\u1eady ta c\u00f3 d\u00e0n \u0111\u1ec1 0-5.<\/p>\n\n\n\n T\u01b0\u01a1ng t\u1ef1 ch\u00fang ta s\u1ebd c\u00f3 c\u00e1c b\u1ed9 d\u00e0n l\u00f4 \u0111\u1ec1 theo c\u00f4ng th\u1ee9c tr\u00ean nh\u01b0 sau:<\/p>\n\n\n\n D\u1ef1a v\u00e0o b\u1ea3ng tr\u00ean, anh em c\u00f3 th\u1ec3 nh\u1eadn ra c\u00e1c d\u00e0n \u0111\u1ec1 mi\u1ec1n B\u1eafc n\u00e0y \u0111\u1ec1u c\u00f3 chung m\u1ed9t t\u00ednh ch\u1ea5t. V\u00ed d\u1ee5, v\u1edbi d\u00e0n 0-5, anh em li\u1ec7t k\u00ea m\u1ed9t d\u00e0n s\u1ed1 \u0111\u01b0\u1ee3c gh\u00e9p l\u1ea1i t\u1eeb c\u00e1c ch\u1eef s\u1ed1 t\u1eeb 0 \u0111\u1ebfn 5 (0 1 2 3 4 5).<\/p>\n\n\n\n C\u00e1c d\u00e0n \u0111\u1ec1 36s c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng nu\u00f4i khung 3 ng\u00e0y ho\u1eb7c khung 5 ng\u00e0y. \u0110\u1ec3 bi\u1ebft chi ti\u1ebft c\u00e1ch nu\u00f4i d\u00e0n \u0111\u1ec1 khung 3-5 ng\u00e0y nh\u01b0 th\u1ebf n\u00e0o, anh em vui l\u00f2ng truy c\u1eadp b\u00e0i vi\u1ebft v\u1ec1 L\u00f4 khung.<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 3 \u2013 8 con s\u1ed1 trong l\u00f4 \u0111\u1ec1 nu\u00f4i theo tu\u1ea7n, c\u00e1ch b\u1eaft d\u00e0n \u0111\u1ec1 3-8 s\u1ed1 l\u00e0 d\u00e0n th\u1ed1ng k\u00ea c\u00e1c con s\u1ed1 t\u1eeb \u0111\u1ea7u 3 \u0111\u00edt 3 cho t\u1edbi \u0111\u1ea7u 8 \u0111\u00edt 8. C\u1ee5 th\u1ec3 nh\u01b0 sau \u0111\u00e2y:<\/p>\n\n\n\n 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 56 55 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88.<\/p>\n\n\n\n T\u1ed5ng c\u1ea3 th\u1ea3y c\u00f3 55 con s\u1ed1. Anh \u1eb9m c\u00f3 th\u1ec3 ch\u1ecdn nu\u00f4i min 1 tu\u1ea7n ho\u1eb7c max 10 ng\u00e0y.<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 40 con s\u1ed1 \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi 2 ch\u1eef s\u1ed1 cu\u1ed1i Gi\u1ea3i 2.2 v\u1ec1 ng\u00e0y h\u00f4m tr\u01b0\u1edbc. \u0110\u1ec3 ch\u1ecdn s\u1ed1, anh em \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p gh\u00e9p ch\u1ea1m d\u00e0n \u0111\u1ec1. C\u1ee5 th\u1ec3 l\u00e0 l\u1ea5y b\u1ed9 d\u00e0n \u0111\u1ea7u ch\u1ea1m v\u00e0 \u0111\u00edt ch\u1ea1m c\u1ee7a 2 ch\u1eef s\u1ed1 cu\u1ed1i \u0111\u00f3, th\u00eam b\u00f3ng v\u00e0 b\u00f3ng l\u1ed9n c\u1ee7a b\u1ed9 96.<\/p>\n\n\n\n V\u00ed d\u1ee5: ng\u00e0y 4\/7\/2024 gi\u1ea3i 2.2 v\u1ec1 l\u00f4 96. C\u00e1c b\u00e1c ti\u1ebfn h\u00e0nh t\u1ea1o d\u00e0n \u0111\u1ec1 40s g\u1ed3m c\u00e1c con s\u1ed1 c\u00f3 \u0111\u1ea7u \u0111\u00edt ch\u1ea1m 9 v\u00e0 ch\u1ea1m 6, c\u1ed9ng th\u00eam con b\u00f3ng v\u00e0 b\u00f3ng l\u1ed9n c\u1ee7a ch\u00fang: Th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 D\u00e0n \u0111\u1ec1 49 qu\u00e2n mi\u1ec1n B\u1eafc<\/strong> v\u00ec \u0111\u01b0\u1ee3c ng\u01b0\u1eddi mi\u1ec1n B\u1eafc h\u1ecd \u00e1p d\u1ee5ng kh\u00e1 nhi\u1ec1u. D\u00e0n 49 qu\u00e2n c\u00f3 th\u1ec3 ch\u01a1i theo c\u1ea3 ki\u1ec3u l\u00e0 ch\u01a1i bao l\u00f4 ho\u1eb7c ch\u01a1i \u0111\u1ec1, tuy nhi\u00ean l\u00fd gi\u1ea3i v\u00ec sao ng\u01b0\u1eddi ta th\u01b0\u1eddng hay g\u1ecdi l\u00e0 D\u00e0n \u0111\u1ec1 49 qu\u00e2n thay v\u00ec D\u00e0n l\u00f4 49 qu\u00e2n th\u00ec m\u00ecnh xin gi\u1ea3i th\u00edch sau. <\/p>\n\n\n\n N\u1ebfu \u0111\u00e1nh l\u00f4 d\u00e0n \u0111\u1eb7c bi\u1ec7t (\u0110B) 49 s\u1ed1 (49 con) th\u00ec kh\u00e1 l\u00e0 n\u1eb7ng v\u1ed1n v\u00ec b\u1ea1n ph\u1ea3i mua bao l\u00f4 t\u1eadn 49 con. N\u1ebfu \u0111\u00e1nh m\u1ed7i con l\u00f4 1 \u0111i\u1ec3m th\u00ec ti\u1ec1n v\u1ed1n bao l\u00f4 d\u00e0n 49 con l\u00e0 49\u00d723=1127k! Ch\u1ec9 1 \u0111i\u1ec3m th\u00f4i m\u00e0 ti\u1ec1n v\u1ed1n c\u0169ng \u0111\u00e3 l\u00ean t\u1edbi tr\u00ean 1 tri\u1ec7u r\u1ed3i. Nghe c\u00f3 v\u1ebb o\u1ea3i qua, kh\u00f4ng bi\u1ebft tr\u00fang nhi\u00eau m\u00e0 ch\u01b0a g\u00ec m\u1ea5t h\u01a1n 1tr th\u1ebf n\u00ean m\u1edbi c\u00f3 ph\u01b0\u01a1ng ph\u00e1p k\u1ebf.<\/p>\n\n\n\n Ch\u00ednh v\u00ec l\u00fd do tr\u00ean m\u00e0 d\u00e0n l\u00f4 \u0111\u1ec1 49 qu\u00e2n \/ s\u1ed1<\/strong> XSMB ch\u1ec9 ph\u00f9 h\u1ee3p \u0111\u00e1nh \u0111\u1ec1 thay v\u00ec \u0111\u00e1nh D\u00e0n l\u00f4 49 con th\u00ec s\u1ebd r\u1ea5t n\u1eb7ng. V\u1ed1n s\u1ebd \u00edt h\u01a1n, ch\u1ec9 49k cho 49 con. Nh\u01b0ng \u0111\u1ed5i l\u1ea1i th\u00ec ti\u1ec1n l\u1eddi \u0111\u01b0\u1ee3c c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng nhi\u1ec1u nh\u01b0 tr\u00fang l\u00f4 d\u00e0n 49 s\u1ed1 tuy nhi\u00ean ch\u1eafc ch\u1eafc \u0111i k\u00e8m \u0111\u00f3 l\u00e0 r\u1ee7i ro c\u0169ng s\u1ebd kh\u00f4ng cao nh\u01b0 ch\u01a1i D\u00e0n l\u00f4 49 s\u1ed1 (49s).<\/p>\n\n\n\n D\u00e0n 49 bao nhi\u00eau con?<\/strong> D\u00e0n 49 qu\u00e2n th\u00ec ch\u1eafc ch\u1eafn s\u1ebd bao g\u1ed3m 49 con, trong \u0111\u00f3 bao g\u1ed3m: 02, 04, 05, 06, 07, 09, 12, 11, 14, 15, 16, 17, 18, 19, 23, 24, 25, 26, 27, 28, 29, 31, 35, 36, 38, 39, 48, 51, 53, 54, 56, 58, 59, 60, 64, 65, 67, 68, 69, 71, 75, 76, 78, 79, 81, 83, 85, 86, 95.<\/p>\n\n\n\n N\u1ebfu chia d\u00e0n 50s d\u1ef1a v\u00e0o s\u1ed1 ch\u1eb5n l\u1ebb, ch\u00fang ta c\u00f3 th\u1ec3 chia n\u00f3 theo d\u00e0n \u0111\u1ea7u ch\u1eb5n ho\u1eb7c \u0111\u1ea7u l\u1ebb nh\u01b0 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n\n T\u1ef1 t\u1ea1o l\u1eadp d\u00e0n \u0111\u1ec1 50 s\u1ed1 m\u1ed9t c\u00e1ch si\u00eau chu\u1ea9n. C\u00e1c b\u00e1c c\u00f3 th\u1ec3 ch\u1ecdn l\u1ea5y m\u1ed9t d\u00e0n \u0111\u1ec1 50s t\u1eeb 00 \u0111\u1ebfn 49 ho\u1eb7c t\u1eeb 50 \u0111\u1ebfn 99, ho\u1eb7c \u0111\u1ea1i lo\u1ea1i nh\u01b0 th\u1ebf. Nh\u01b0ng c\u00e1ch t\u1ed1t nh\u1ea5t v\u1eabn l\u00e0 th\u1ed1ng k\u00ea \u0111\u1ea7u \u0111u\u00f4i c\u00e1c con \u0111\u1ec1 v\u1ec1 g\u1ea7n \u0111\u00e2y.<\/p>\n\n\n\n Anh em xem th\u1ed1ng k\u00ea \u0111\u1ea7u \u0111u\u00f4i \u0111\u1eb7c bi\u1ec7t c\u1ee7a m\u1ed9t web XS b\u1ea5t k\u1ef3, ti\u1ebfn h\u00e0nh l\u1ecdc:<\/p>\n\n\n\n VD: th\u1ed1ng k\u00ea \u0111\u1ea7u \u0111u\u00f4i \u0111\u1eb7c bi\u1ec7t t\u00ednh t\u1edbi ng\u00e0y 11\/07\/2024, ta c\u00f3:<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 56 s\u1ed1 b\u1ea5t t\u1eed \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean b\u1eb1ng c\u00e1ch lo\u1ea1i b\u1ecf nh\u1eefng b\u1ed9 s\u1ed1 ch\u1ea1m 0, ch\u1ea1m 1 v\u00e0 b\u1ed9 s\u1ed1 k\u00e9p b\u1eb1ng (11 22 33,\u2026).<\/p>\n\n\n\n Khi \u0111\u00f3 d\u00e0n \u0111\u1ec1 56 con s\u1ebd c\u00f2n l\u1ea1i: 23, 24, 25, 26, 27, 28, 29, 32, 34, 35, 36, 37, 38, 39, 42, 43, 45, 46, 47, 48, 49, 52, 53, 54, 56, 57, 58, 59, 62, 63, 64, 65, 67, 68, 69, 72, 73, 74, 75, 76, 78, 79, 82, 83, 84, 85, 86, 87, 89, 92, 93, 94, 95, 96, 97, 98.<\/p>\n\n\n\n D\u00f9 ch\u01b0a th\u1ea1o ch\u01a1i \u0111\u1ec1 th\u00ec anh em nghe t\u1eeb d\u00e0n \u0111\u1ec1 k\u00e9p hay d\u00e0n \u0111\u1ec1 k\u00e9p b\u1eb1ng th\u00ec c\u0169ng hi\u1ec3u \u0111\u01b0\u1ee3c ch\u00fang g\u1ed3m nh\u1eefng con n\u00e0o. Tuy nhi\u00ean n\u1ebfu m\u00e0 n\u00f3i \u0111\u1ebfn nh\u1eefng d\u00e0n \u0111\u1ec1 k\u00e9p kh\u00e1c th\u00ec ch\u1eafc m\u1ecdi ng\u01b0\u1eddi c\u00f2n ch\u01b0a th\u00f4ng hi\u1ec3u.<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 k\u00e9p \u00e2m g\u1ed3m c\u00f3 nh\u1eefng con s\u1ed1 n\u00e0o? \u00c1p d\u1ee5ng quy t\u1eafc b\u00f3ng \u00e2m \u0111\u1ed1i v\u1edbi c\u00e1c s\u1ed1 \u0111\u1ec1, ch\u00fang ta c\u00f3 th\u1ec3 t\u1ea1o \u0111\u01b0\u1ee3c b\u1ed9 s\u1ed1 k\u00e9p \u00e2m. D\u00e0n n\u00e0y g\u1ed3m c\u00f3 10 con s\u1ed1 nh\u01b0 sau:<\/p>\n\n\n\n 07, 70, 14, 41, 29, 92, 36, 63, 58, 85<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 k\u00e9p l\u1ec7ch c\u00f3 bao nhi\u00eau con? D\u00e0n \u0111\u1ec1 k\u00e9p l\u1ec7ch c\u00f2n c\u00f3 t\u00ean l\u00e0 d\u00e0n \u0111\u1ec1 s\u00e1t k\u00e9p. Ch\u00fang l\u00e0 nh\u1eefng con s\u1ed1 \u0111\u01b0\u1ee3c t\u1ea1o n\u00ean b\u1edfi quy t\u1eafc b\u00f3ng d\u01b0\u01a1ng. Ch\u00fang ta c\u00f3 d\u00e0n k\u00e9p l\u1ec7ch g\u1ed3m c\u00f3 10 s\u1ed1 nh\u01b0 sau:<\/p>\n\n\n\n 05, 50, 16, 61, 27, 72, 38, 83, 49, 94<\/p>\n\n\n\n Ch\u00fang ta c\u00f3 2 lo\u1ea1i d\u00e0n \u0111\u1ec1 s\u00e1t k\u00e9p (c\u00f2n c\u00f3 t\u00ean l\u00e0 d\u00e0n \u0111\u1ec1 \u00e1p k\u00e9p).<\/p>\n\n\n\n C\u00e1c s\u1ed1 ch\u1eb5n v\u00e0 l\u1ebb khi k\u1ebft h\u1ee3p s\u1ebd t\u1ea1o ra \u0111\u01b0\u1ee3c c\u00e1c b\u1ed9 s\u1ed1 c\u00f3 t\u00ednh ch\u1ea5t nh\u01b0 d\u01b0\u1edbi \u0111\u00e2y<\/p>\n\n\n\n D\u00e0n n\u00e0y \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi s\u1ed1 \u0111\u1ea7u l\u00e0 s\u1ed1 ch\u1eb5n c\u00f2n s\u1ed1 \u0111u\u00f4i l\u00e0 s\u1ed1 l\u1ebb. G\u1ed3m c\u00f3 25 con s\u1ed1 nh\u01b0 sau:<\/p>\n\n\n\n 01, 03, 05, 07, 09, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89<\/p>\n\n\n\n G\u1ed3m c\u00f3 25 s\u1ed1 c\u00f3 h\u00e0ng ch\u1ee5c l\u00e0 s\u1ed1 l\u1ebb c\u00f2n h\u00e0ng \u0111\u01a1n v\u1ecb s\u1ed1 ch\u1eb5n.<\/p>\n\n\n\n 10, 12, 14, 16, 18, 30, 32, 34, 36, 38, 50, 52, 54, 56, 58, 70, 72, 74, 76, 78, 90, 92, 94, 96, 98<\/p>\n\n\n\n H\u00e0ng \u0111\u01a1n v\u1ecb v\u00e0 h\u00e0ng ch\u1ee5c \u0111\u1ec1u l\u00e0 c\u00e1c s\u1ed1 ch\u1eb5n. G\u1ed3m c\u00f3 25 s\u1ed1:<\/p>\n\n\n\n 00, 02, 04, 06, 08, 20, 22, 24, 26, 28, 40, 42, 44, 46, 48, 60, 62, 64, 66, 68, 80, 82, 84, 86, 88<\/p>\n\n\n\n L\u00e0 b\u1ed9 25 \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi c\u00e1c con s\u1ed1 l\u1ebb.<\/p>\n\n\n\n 11, 13, 15, 17, 19, 31, 33, 35, 37, 39, 51, 53, 55, 57, 59, 71, 73, 75, 77, 79, 91, 93, 95, 97, 99<\/p>\n\n\n\n B\u1ed9 s\u1ed1 n\u00e0y g\u1ed3m c\u00f3 20 con. N\u00f3 c\u00f3 t\u00ean g\u1ecdi nh\u01b0 v\u1eady b\u1edfi ch\u00fang ta s\u1ebd l\u1ef1a ch\u1ecdn nu\u00f4i b\u1ed9 n\u00e0y trong kho\u1ea3ng gi\u1eefa th\u00e1ng. Th\u01b0\u1eddng d\u00e0n \u0111\u1ec1 trung gian n\u1ed5 v\u00e0o ng\u00e0y 9 ho\u1eb7c 13, 14. Ch\u00fang ta c\u00f3 20 con s\u1ed1 b\u1ed9 s\u1ed1 trung gian nh\u01b0 sau:<\/p>\n\n\n\n 060, 070, 080 090, 171, 181, 191, 282, 292, 393<\/p>\n\n\n\n Ngo\u00e0i nh\u1eefng d\u00e0n \u0111\u1eb7c bi\u1ec7t tr\u00ean, ch\u00fang ta c\u00f2n c\u00f3 r\u1ea5t nhi\u1ec1u d\u00e0n \u0111\u1ec1 c\u00f3 th\u1ec3 \u0111\u00e1nh theo kh\u00e1c n\u1eefa. Ch\u00fang l\u00e0 nh\u1eefng d\u00e0n \u0111\u1ec1 c\u1ed1 \u0111\u1ecbnh d\u1ef1a theo m\u1ed9t t\u00ednh ch\u1ea5t nh\u1ea5t \u0111\u1ecbnh. V\u00ed d\u1ee5 nh\u01b0:<\/p>\n\n\n\n D\u1ef1a theo t\u00ednh ch\u1ea5t c\u00e1c s\u1ed1 chia cho 3, ch\u00fang ta c\u00f3 c\u00e1c d\u1ea1ng d\u00e0n \u0111\u1ec1 chia cho 3 \u0111\u00f3 l\u00e0:<\/p>\n\n\n\n \u0110\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 d\u00e0n \u0111\u1ec1 n\u00e0y, anh c\u00f3 th\u1ec3 tham kh\u1ea3o trong b\u00e0i vi\u1ebft v\u1ec1 T\u1ed5ng \u0111\u1ec1 \u2013 c\u00e1c b\u1ed9 s\u1ed1 \u0111\u1ec1<\/p>\n\n\n\n D\u00e0n \u0111\u1ec1 ch\u00e3o l\u00e0 g\u00ec? Theo t\u1eeb \u0111i\u1ec3n ti\u1ebfng Vi\u1ec7t th\u00ec ch\u00e3o c\u00f3 ngh\u0129a l\u00e0 d\u00e2y th\u1eebng, ho\u1eb7c ch\u1eafc ch\u1eafn. C\u00e1c d\u00e0n \u0111\u1ec1 ch\u00e3o th\u01b0\u1eddng g\u1ed3m 8x s\u1ed1. D\u00e2n ch\u01a1i \u0111\u1ec1 l\u1eadp c\u00e1c d\u00e0n ch\u00e3o 80 s\u1ed1, 84 s\u1ed1 ho\u1eb7c nhi\u1ec1u h\u01a1n \u0111\u1ec3 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang \u0111\u1ec1 ch\u1eafc \u0103n h\u01a1n.<\/p>\n\n\n\n C\u00e1c d\u00e0n \u0111\u1ec1 nhi\u1ec1u con s\u1ed1 nh\u01b0 th\u1ebf n\u00e0y ch\u1ec9 n\u00ean nu\u00f4i trong th\u1eddi gian ng\u1eafn h\u1ea1n. Ngo\u00e0i ra \u0111\u1ec3 \u0111\u00e1nh d\u00e0n \u0111\u1ec3 ch\u00e3o th\u00ec \u0111i\u1ec1u t\u1ea5t y\u1ebfu l\u00e0 h\u1ea7u bao ph\u1ea3i d\u00e0y.<\/p>\n\n\n\n Ta c\u00f3 d\u00e0n \u0111\u1eb7c bi\u1ec7t (\u0110B) mi\u1ec1n B\u1eafc \u0103n 100 ng\u00e0y c\u00f3 x\u00e1c su\u1ea5t v\u1ec1 cao nh\u1ea5t nh\u01b0 sau<\/p>\n\n\n\n M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh d\u00e0n \u0111\u1ec1 l\u00e2u \u0111\u1eddi n\u1eefa l\u00e0 \u0111\u00e1nh d\u00e0n theo 12 con gi\u00e1p. B\u1ea1n \u0111\u1ed1i chi\u1ebfu b\u1ea3ng 12 con gi\u00e1p s\u1ed1 \u0111\u1ec1 b\u00ean c\u1ea1nh tu\u1ed5i m\u00ecnh l\u00e0 g\u00ec v\u00e0 \u0111\u00e1nh d\u00e0n 8 ho\u1eb7c 9 s\u1ed1 \u0111\u1ec1 s\u1ebd v\u1ec1 ng\u00e0y h\u00f4m \u0111\u00f3.<\/p>\n\n\n\nD\u00e0n l\u00f4 \u0111\u1ec1 hi\u1ec7u 20 con b\u1ed5 sung<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 20 con hi\u1ec7u 1<\/strong><\/h4>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 20 s\u1ed1 hi\u1ec7u 2<\/strong><\/h4>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 20 qu\u00e2n hi\u1ec7u 3<\/strong><\/h4>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 20s hi\u1ec7u 4<\/strong><\/h4>\n\n\n\n
C\u00e1ch l\u1eadp m\u1ed9t d\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t g\u1ed3m 20 s\u1ed1<\/strong><\/h3>\n\n\n\n
C\u1ee5 th\u1ec3 th\u1ef1c hi\u1ec7n nh\u01b0 sau:<\/strong><\/h5>\n\n\n\n
50 53 56 58 90 93 96 98 00 03 06 08 80 83 86 88 20 23 26 28.<\/li><\/ul>\n\n\n\nD\u00e0n l\u00f4 \u0111\u1ec1 24 s\u1ed1<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 25 con<\/strong><\/h2>\n\n\n\n
00 11 22 33 44 01 02 03 04 10 20 30 40 12 13 14 41 31 21 23 24 42 32 34 43<\/li>
55 66 77 88 99 56 57 58 59 95 85 75 65 67 68 69 96 86 76 78 79 97 87 89 98<\/li>
05 06 07 08 09 15 16 17 18 19 25 26 27 28 29 5 36 37 38 39 45 46 47 48 49<\/li>
50 60 70 80 90 51 61 71 81 91 52 62 72 82 92 53 63 73 83 93 54 64 74 84 94<\/li><\/ol>\n\n\n\nD\u00e0n l\u00f4 \u0111\u1ec1 30 s\u1ed1<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 34 s\u1ed1<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 36 qu\u00e2n<\/strong><\/h2>\n\n\n\n
C\u00e1ch soi c\u1ea7u d\u00e0n l\u00f4 \u0111\u1ec1 36 s\u1ed1 d\u1ef1a th\u1ed1ng k\u00ea \u0111\u1ea7u \u0111u\u00f4i<\/strong><\/h3>\n\n\n\n
C\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t 36 con d\u1ef1a v\u00e0o t\u1ed5ng \u0111\u1ec1<\/strong><\/h3>\n\n\n\n
\u0110\u1ec1 t\u1ed5ng d\u01b0\u1edbi 10 c\u00f3 36 qu\u00e2n c\u00f3 t\u1ed5ng hai ch\u1eef s\u1ed1 c\u1ed9ng l\u1ea1i nh\u1ecf h\u01a1n 10 nh\u01b0 sau:
00, 01, 10, 20, 02, 30, 03, 04, 40, 50, 05, 06, 60, 07, 70, 08, 80, 09, 90, 11, 12, 21, 13, 31, 14, 41, 15, 51, 16, 61, 17, 71, 18, 81, 23, 32, 24, 42, 25, 52, 26, 62, 27, 72, 34, 43, 35, 53, 36, 63, 45, 54.<\/li>
\u0110\u1ec1 t\u1ed5ng l\u1edbn h\u01a1n 10 c\u00f3 36 s\u1ed1 c\u00f3 t\u1ed5ng hai ch\u1eef s\u1ed1 c\u1ed9ng l\u1ea1i l\u1edbn h\u01a1n 10.
29, 92, 38, 83, 47, 74, 56, 65, 39, 93, 48, 84, 57, 75, 66, 49, 94, 58, 85, 67, 76, 68, 86, 77, 59, 95, 78, 87, 96, 96, 88, 97, 79, 98, 89, 99.<\/li><\/ul>\n\n\n\nD\u00e0n l\u00f4 \u0111\u1ec1 36s c\u00f3 d\u1ea1ng c\u00f4ng th\u1ee9c<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 3 \u2013 8 s\u1ed1<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 40 qu\u00e2n<\/strong><\/h2>\n\n\n\n
09 19 29 39 49 59 69 79 89 99 90 91 92 93 94 95 96 97 98
06 16 26 36 46 56 66 76 86 96 60 61 62 63 64 65 67 68 69
41 14
K\u1ebft qu\u1ea3 ng\u00e0y 06\/07\/2024 v\u1ec1 97.<\/p>\n\n\n\nD\u00e0n l\u00f4 \u0111\u1ec1 49 qu\u00e2n<\/strong><\/h2>\n\n\n\n
D\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t 50 qu\u00e2n<\/strong><\/h2>\n\n\n\n
D\u00e0n \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t 56 s\u1ed1<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 k\u00e9p<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 k\u00e9p \u00e2m<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 k\u00e9p l\u1ec7ch<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 s\u00e1t k\u00e9p (\u00e1p k\u00e9p)<\/strong><\/h3>\n\n\n\n
Nh\u1eefng b\u1ed9 s\u1ed1 g\u1ed3m 2 ch\u1eef s\u1ed1 ch\u00eanh l\u1ec7ch nhau 1 \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c g\u00f3p chung t\u1ea1o th\u00e0nh d\u00e0n \u0111\u1ec1 s\u00e1t k\u00e9p b\u1eb1ng. D\u00e0n \u0111\u1ec1 n\u00e0y g\u1ed3m c\u00f3 20 con s\u1ed1 nh\u01b0 sau:
01 10 12 21 32 23 34 43 45 54 56 65 76 67 78 87 89 98 90 09
C\u00e1c b\u00e1c l\u01b0u \u00fd l\u00e0 2 s\u1ed1 90 09 \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 l\u00e0 9 v\u00e0 10 n\u00ean v\u1eabn xem nh\u01b0 l\u00e0 b\u1ed9 s\u1ed1 s\u00e1t k\u00e9p l\u1ec7ch. Tuy nhi\u00ean s\u1ebd c\u00f3 n\u01a1i ghi \u0111\u1ec1 kh\u00f4ng t\u00ednh nh\u01b0 v\u1eady. C\u00e1c b\u00e1c \u0111i ghi \u0111\u1ec1 n\u00ean h\u1ecfi ng\u01b0\u1eddi ta cho r\u00f5.<\/li>
Ch\u00fang ta c\u00f3 b\u1ed9 s\u1ed1 s\u00e1t k\u00e9p b\u1eb1ng g\u1ed3m c\u00e1c s\u1ed1 s\u00e1t v\u1edbi b\u1ed9 k\u00e9o b\u1eb1ng. T\u01b0\u01a1ng t\u1ef1 s\u1ebd c\u00f3 b\u1ed9 s\u00e1t k\u00e9p l\u1ec7ch bao g\u1ed3m c\u00e1c s\u1ed1 s\u00e1t v\u1edbi b\u1ed9 k\u00e9p l\u1ec7ch. D\u00e0n \u0111\u1ec1 n\u00e0y c\u00f3 20 con s\u1ed1 nh\u01b0 sau:
04, 06, 49, 51, 15, 17, 60, 62, 26, 28, 71, 73, 37, 39, 82, 84, 48, 50, 93, 95<\/li><\/ol>\n\n\n\nD\u00e0n l\u00f4 \u0111\u1ec1 c\u00f3 thu\u1ed9c t\u00ednh ch\u1eb5n ho\u1eb7c l\u1ebb<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t ch\u1eb5n l\u1ebb<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t<\/strong> l\u1ebb ch\u1eb5n<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t<\/strong> ch\u1eb5n ch\u1eb5n<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t<\/strong> l\u1ebb l\u1ebb<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t<\/strong> trung gian<\/strong><\/h3>\n\n\n\n
M\u1ed9t s\u1ed1 d\u00e0n \u0111\u1eb7c bi\u1ec7t d\u1ec5 tr\u00fang kh\u00e1c<\/strong><\/h2>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 chia 3<\/strong><\/h3>\n\n\n\n
C\u00e1c d\u00e0n l\u00f4 \u0111\u1ec1 ch\u00e3o<\/strong><\/h3>\n\n\n\n
M\u1ed9t s\u1ed1 d\u00e0n l\u00f4 \u0111\u1ec1 \u0111\u1eb7c bi\u1ec7t kh\u00e1c<\/strong><\/h3>\n\n\n\n
D\u00e0n l\u00f4 \u0111\u1ec1 72 con<\/td> 01 02 03 04 05 06 07 08 12 13 15 17 21 22 23 224 25 26 27 28 29 30 31 32 33 34 35 37 38 40 42 43 44 45 47 48 49 52 53 58 60 61 62 63 64 65 67 68 70 71 72 73 74 75 76 77 78 79 80 82 83 84 85 86 87 88 89 92 94 95 97 98<\/td><\/tr> D\u00e0n l\u00f4 \u0111\u1ec1 60 con<\/td> 01 02 05 08 09 11 12 16 18 19 21 25 26 28 29 32 35 36 38 39 41 43 44 45 46 47 48 49 52 55 56 58 61 62 63 64 65 66 67 69 71 72 75 76 78 80 81 82 83 84 85 87 89 90 91 92 93 94 96 98<\/td><\/tr> D\u00e0n l\u00f4 \u0111\u1ec1 50 con<\/td> 02 03 13 15 19 21 23 24 28 30 31 32 34 37 39 41 42 43 46 47 48 49 50 51 52 56 58 59 61 65 68 69 70 73 74 75 76 77 78 79 82 83 84 85 86 89 91 92 93 94 95<\/td><\/tr> D\u00e0n l\u00f4 \u0111\u1ec1 44 con<\/td> 00 01 03 04 10 11 12 14 15 18 19 21 27 30 33 34 37 38 42 43 44 45 47 48 49 53 58 71 72 73 74 75 77 78 79 82 83 84 85 87 88 89<\/td><\/tr> D\u00e0n l\u00f4 \u0111\u1ec1 40 con<\/td> 12 13 15 17 21 23 24 27 28 31 32 33 34 35 37 38 42 43 44 45 47 48 49 53 58 71 72 73 74 75 77 78 79 82 83 84 85 87 88 89<\/td><\/tr> D\u00e0n l\u00f4 \u0111\u1ec1 16 con<\/td> 22 23 24 25 26 27 32 33 34 35 36 37 42 43 44 45<\/td><\/tr> D\u00e0n l\u00f4 \u0111\u1ec1 7 con<\/td> 02 03 04 05 06 07 08<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n C\u00e1ch \u0111\u00e1nh d\u00e0n l\u00f4 \u0111\u1ec1 theo b\u1ed9 12 con gi\u00e1p<\/strong><\/h3>\n\n\n\n