D\u00e0n \u0111\u1ec1 25 s\u1ed1<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng b\u1ed9 d\u00e0n soi c\u1ea7u \u0111\u1ec1 \u0111a d\u1ea1ng v\u00e0 hi\u1ec7u qu\u1ea3 h\u00e0ng \u0111\u1ea7u, \u01b0u \u0111i\u1ec3m c\u1ee7a n\u00f3 l\u00e0 kh\u00e1 phong ph\u00fa c\u00f9ng m\u1ed9t s\u1ed1 d\u1ea1ng d\u00e0n \u0111\u1eb7c bi\u1ec7t 25 con kh\u00e1c nhau, chi ti\u1ebft nh\u01b0 th\u1ebf n\u00e0o s\u1ebd \u0111\u01b0\u1ee3c kubet gi\u1edbi thi\u1ec7u trong b\u00e0i vi\u1ebft h\u00f4m nay. Xin m\u1eddi c\u00e1c b\u1ea1n theo d\u00f5i n\u1ed9i dung.<\/p>\n D\u00e0n \u0111\u1eb7c bi\u1ec7t 25 con<\/strong> c\u00f3 t\u1ef7 l\u1ec7 1\/4 trong 100 b\u1ed9 s\u1ed1 c\u1ea7u l\u00f4 \u0111\u1ec1. B\u00ean c\u1ea1nh \u0111\u00f3 th\u00ec xsmb c\u00f3 to\u00e0n b\u1ed9 l\u00e0 27 gi\u1ea3i do \u0111\u00f3 x\u00e1c su\u1ea5t tr\u00fang t\u1ed1i thi\u1ec3u l\u00e0 23% \u0103n l\u00f4, v\u00ec v\u1eady d\u00e0n 25 s\u1ed1 n\u1eb1m trong ph\u1ea1m vi t\u1ef7 l\u1ec7 th\u1eafng l\u00f4 \u0111\u1ec1 cao.<\/p>\n Nhi\u1ec1u nh\u1ea5t l\u00e0 35 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y g\u1ed3m c\u00f3 c\u00e1c con s\u1ed1 sau \u0111\u00e2y:<\/p>\n 00, 22, 44, 66, 88, 02, 20, 04, 40, 06, 60, 08, 80, 24, 42, 26, 62, 28, 82, 46, 64, 48, 84, 68, 86.<\/p>\n T\u1ed1i \u0111a l\u00e0 28 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y bao g\u1ed3m c\u00e1c con s\u1ed1 sau \u0111\u00e2y:<\/p>\n 11, 33, 55, 77, 99, 13, 31, 15, 51, 17, 71, 19, 91, 35, 53, 37, 73, 39, 93, 57, 75, 59, 95, 79, 97<\/p>\n Nhi\u1ec1u nh\u1ea5t l\u00e0 31 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y bao g\u1ed3m c\u00e1c c\u1eb7p s\u1ed1 sau \u0111\u00e2y:<\/p>\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 T\u1ed1i \u0111a l\u00e0 30 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y bao g\u1ed3m c\u00e1c c\u1eb7p s\u1ed1 nh\u01b0 sau:<\/p>\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 Tham kh\u1ea3o b\u1ed9 c\u1ea7u l\u00f4 \u0111\u1ec1 xsmb h\u00e0ng ng\u00e0y m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t t\u1ea1i: soi c\u1ea7u xsmb.<\/p>\n T\u1ed1i \u0111a l\u00e0 22 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y nh\u01b0 d\u00e0n sau \u0111\u00e2y:<\/p>\n 55, 66, 77, 88, 99, 56, 65, 57, 75, 58, 85, 59, 95, 67, 76, 68, 86, 69, 96, 78, 87, 79, 97, 89, 98<\/p>\n T\u1ed1i \u0111a l\u00e0 31 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y bao g\u1ed3m nh\u1eefng con s\u1ed1 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n 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 T\u1ed1i \u0111a l\u00e0 23 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y bao g\u1ed3m c\u00e1c s\u1ed1 sau:<\/p>\n 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 T\u1ed1i \u0111a l\u00e0 33 ng\u00e0y, t\u1ea7n su\u1ea5t 8 \u0111\u1ebfn 12 ng\u00e0y g\u1ed3m c\u00f3 c\u00e1c s\u1ed1 sau:<\/p>\n 90, 91, 92, 93, 94, 80, 81, 82, 83, 84, 70, 71, 72, 73, 74, 60, 61, 62, 63, 64, 50, 51, 52, 53, 54<\/p>\n B\u1ed9 d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb g\u1ed3m c\u00f3 c\u00e1c con s\u1ed1 sau \u0111\u00e2y:<\/p>\n 01, 10, 29, 92, 38, 83, 47, 74, 56, 65, 03, 30, 12, 21, 49, 94, 58, 85, 67, 76, 05, 50, 14, 41, 23, 32, 69, 96, 78, 87, 07, 70, 16, 61, 25, 52, 34, 43, 89, 98, 09, 90, 18, 81, 27, 72, 36, 63, 45, 54.<\/p>\n V\u1eeba r\u1ed3i ch\u00fang t\u00f4i \u0111\u00e3 t\u1ed5ng h\u1ee3p nh\u1eefng d\u00e0n \u0111\u1ec1 \u0111\u00e1nh h\u00e0ng ng\u00e0y 25 con ho\u1eb7c c\u00f3 th\u1ec3 nu\u00f4i d\u00e0n \u0111\u1ec1 25 s\u1ed1 khung 3 ng\u00e0y ng\u1eabu nhi\u00ean m\u1ed9t c\u00e1ch chu\u1ea9n nh\u1ea5t trong b\u00ed k\u00edp l\u00f4 \u0111\u1ec1 c\u1ee7a c\u00e1c cao th\u1ee7, anh ch\u1ecb em c\u00f3 th\u1ec3 v\u1eadn d\u1ee5ng b\u1eb1ng c\u00e1ch ch\u1ecdn ra l\u1ea7n l\u01b0\u01a1t 3 \u0111\u1ebfn 5 s\u1ed1 \u0111\u00e1nh theo ng\u00e0y c\u00f9ng m\u1ed9t chu k\u1ef3, hay d\u1ef1a v\u00e0o m\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n c\u1ea7u n\u00e0o trong d\u00e0n \u0111\u1ec1 c\u00f3 x\u00e1c su\u1ea5t v\u1ec1 t\u1ed1t nh\u1ea5t.<\/p>\n L\u01b0u \u00fd:<\/strong> D\u00e0n \u0111\u1ec1 25 s\u1ed1 ch\u00fang t\u00f4i cung c\u1ea5p v\u1edbi m\u1ee5c \u0111\u00edch tham kh\u1ea3o, anh ch\u1ecb em kh\u00f4ng n\u00ean ghi to\u00e0n b\u1ed9 s\u1ed1 c\u00f3 trong d\u00e0n nh\u00e9!<\/p>\n Soi c\u1ea7u theo d\u00e0n \u0111\u1ec1 l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1ch t\u00ednh c\u1ea7u l\u00f4 \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 d\u00e0ng, h\u1ed9i vi\u00ean c\u1ea7n l\u01b0u \u00fd chu k\u1ef3 c\u1ea7u ch\u1ea1y \u0111\u1ec3 r\u00fat \u0111\u01b0\u1ee3c nhanh ch\u00f3ng sau khi c\u1ea7u g\u00e3y, ch\u1edd chu k\u1ef3 m\u1edbi t\u1edbi \u0111\u1ec3 b\u1eaft \u0111\u1ea7u nu\u00f4i l\u1ea1i d\u00e0n \u0111\u1ec1.<\/p>\n Ch\u00fac c\u00e1c b\u1ea1n gi\u1ea3i tr\u00ed vui v\u1ebb v\u00e0 th\u1eafng l\u1edbn v\u1edbi D\u00e0n \u0111\u1ec1 b\u1ea5t b\u1ea1i 25 s\u1ed1 nh\u00e9!<\/p>\n<\/figure>\n<\/div>\n
D\u00e0n \u0111\u1ec1 mb 25 s\u1ed1 ch\u1eb5n ch\u1eb5n<\/h2>\n
D\u00e0n \u0111\u1ec1 b\u1ea5t b\u1ea1i 25 con l\u1ebb l\u1ebb<\/h2>\n
D\u00e0n \u0111\u1ec1 ch\u01a1i trong ng\u00e0y 25 s\u1ed1 ch\u1eb5n l\u1ebb<\/h2>\n
D\u00e0n \u0111\u1ec1 25 s\u1ed1 l\u1ebb ch\u1eb5n hay ra<\/h2>\n
D\u00e0n \u0111\u1ec1 to to 25 s\u1ed1<\/h2>\n
D\u00e0n \u0111\u1ec1 to b\u00e9 25 s\u1ed1<\/h2>\n
D\u00e0n \u0111\u1ec1 nh\u1ecf nh\u1ecf 25 s\u1ed1 ch\u00ednh x\u00e1c<\/h2>\n
D\u00e0n \u0111\u1ec1 25 s\u1ed1 to nh\u1ecf<\/h2>\n
D\u00e0n \u0111\u1ec3 t\u1ed5ng l\u1ebb<\/h2>\n
D\u00e0n \u0111\u1ec1 k\u00e9p, s\u00e1t k\u00e9p, k\u00e9p l\u1ec7ch<\/h2>\n
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