{"id":18178,"date":"2024-03-26T22:52:56","date_gmt":"2024-03-26T22:52:56","guid":{"rendered":"https:\/\/soicau3060.minhngocxoso.com\/tim-hieu-kep-lech-kep-bang-sat-kep-kep-lech-am\/"},"modified":"2024-03-26T22:52:56","modified_gmt":"2024-03-26T22:52:56","slug":"tim-hieu-kep-lech-kep-bang-sat-kep-kep-lech-am","status":"publish","type":"post","link":"https:\/\/chotdebachthu.com\/tim-hieu-kep-lech-kep-bang-sat-kep-kep-lech-am\/","title":{"rendered":"T\u00ecm hi\u1ec3u K\u00e9p l\u1ec7ch \u2013 K\u00e9p b\u1eb1ng \u2013 S\u00e1t k\u00e9p \u2013 K\u00e9p l\u1ec7ch \u00e2m"},"content":{"rendered":"
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 K\u00e9p l\u1ec7ch hay k\u00e9p l\u1ec7ch g\u1ed3m nh\u1eefng con g\u00ec l\u00e0 kh\u00e1i ni\u1ec7m m\u00e0 kh\u00f4ng ph\u1ea3i ai c\u0169ng n\u1eafm r\u00f5 \u0111\u01b0\u1ee3c? Trong b\u00e0i vi\u1ebft n\u00e0y s\u1ebd chia s\u1ebb nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 k\u00e9p l\u1ec7ch. B\u00ean c\u1ea1nh \u0111\u00f3 ch\u00fang t\u00f4i c\u0169ng h\u01b0\u1edbng d\u1eabn b\u1ea1n nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u hi\u1ec7u qu\u1ea3.<\/em><\/span><\/strong><\/p>\n

K\u00e9p b\u1eb1ng<\/span><\/h2>\n

\"c\u00e1c<\/span><\/p>\n

B\u1ed9 k\u00e9p l\u00e0 m\u1ed9t trong nh\u1eefng kh\u00e1i ni\u1ec7m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t trong l\u00f4 \u0111\u1ec1. T\u1eeb t\u00ean g\u1ecdi K\u00e9p b\u1eb1ng (b\u1eb1ng \u0111\u00e2y c\u00f3 ngh\u0129a l\u00e0 b\u1eb1ng nhau) th\u00ec ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u b\u1ed9 k\u00e9p n\u00e0y g\u1ed3m 2 s\u1ed1 gi\u1ed1ng nhau.<\/span><\/p>\n

V\u1edbi b\u1ed9 k\u00e9p n\u00e0y ch\u00fang ta s\u1ebd c\u00f3 t\u1ed5ng c\u1ed9ng 10 s\u1ed1 bao g\u1ed3m: 00, 11, 22, 33, 44, 55, 66, 77, 88, 99<\/strong><\/span><\/p>\n

Tr\u1ea3i qua nhi\u1ec1u n\u0103m trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n c\u1ee7a l\u00f4 \u0111\u1ec1 t\u1eeb k\u00e9p b\u1eb1ng, ng\u01b0\u1eddi ta \u0111\u00e3 ph\u00e1t hi\u1ec7n th\u00eam c\u00e1c b\u1ed9 k\u00e9p kh\u00e1c \u0111\u00f3 l\u00e0 k\u00e9p l\u1ec7ch<\/strong>, s\u00e1t k\u00e9p<\/strong> v\u00e0 k\u00e9p l\u1ec7ch \u00e2m<\/strong>. V\u1eady nh\u1eefng b\u1ed9 k\u00e9p n\u00e0y t\u1ea1i sao l\u1ea1i c\u00f3 t\u00ean g\u1ecdi nh\u01b0 v\u1eady v\u00e0 m\u1ed7i b\u1ed9 k\u00e9p c\u00f3 bao nhi\u00eau s\u1ed1? H\u00e3y c\u00f9ng ti\u1ebfp t\u1ee5c theo d\u00f5i.<\/span><\/p>\n

K\u00e9p l\u1ec7ch<\/span><\/h2>\n

\"c\u00e1c<\/span><\/p>\n

B\u00f3ng l\u00f4 \u0111\u1ec1<\/em><\/span><\/h3>\n

Kh\u00e1i ni\u1ec7m k\u00e9p l\u1ec7ch \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n d\u1ef1a tr\u00ean m\u1ed9t kh\u00e1i ni\u1ec7m kh\u00e1c trong l\u00f4 \u0111\u1ec1 \u0111\u00f3 l\u00e0 b\u00f3ng. \u0110\u1ea1i lo\u1ea1i \u1ee9ng v\u1edbi m\u1ed7i m\u1ed9t b\u00f3ng s\u1ed1 trong l\u00f4 \u0111\u1ec1 \u0111\u1ec1u c\u00f3 m\u1ed9t s\u1ed1 b\u00f3ng kh\u00e1c \u1ee9ng k\u00e8m. Theo \u0111\u00f3 ta c\u00f3 nh\u1eefng c\u1eb7p s\u1ed1 sau l\u00e0 b\u00f3ng c\u1ee7a nhau:<\/span><\/p>\n

    \n
  • S\u1ed1 0<\/strong> v\u00e0 5<\/strong> l\u00e0 b\u00f3ng c\u1ee7a nhau<\/span><\/li>\n
  • S\u1ed1 1<\/strong> v\u00e0 6<\/strong> l\u00e0 b\u00f3ng c\u1ee7a nhau<\/span><\/li>\n
  • S\u1ed1 2<\/strong> v\u00e0 7<\/strong> l\u00e0 b\u00f3ng c\u1ee7a nhau<\/span><\/li>\n
  • S\u1ed1 3<\/strong> v\u00e0 8<\/strong> l\u00e0 b\u00f3ng c\u1ee7a nhau<\/span><\/li>\n
  • S\u1ed1 4<\/strong> v\u00e0 9<\/strong> l\u00e0 b\u00f3ng c\u1ee7a nhau<\/span><\/li>\n<\/ul>\n

    T\u1eeb \u0111\u00e2y c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 l\u1eadp lu\u1eadn ti\u1ebfp 1 s\u1ed1 \u0111\u1ec1 n\u00e0o \u0111\u00f3 c\u00f3 ph\u1ea3i l\u00e0 b\u00f3ng c\u1ee7a nhau kh\u00f4ng d\u1ef1a theo t\u00ednh ch\u1ea5t b\u1eafc c\u1ea7u trong to\u00e1n h\u1ecdc. V\u00ed d\u1ee5 \u1edf \u0111\u00e2y t\u00f4i c\u00f3 c\u1eb7p s\u1ed1 32<\/strong> v\u00e0 37<\/strong> c\u0169ng l\u00e0 b\u00f3ng c\u1ee7a nhau b\u1edfi 2<\/strong> v\u00e0 7<\/strong> c\u0169ng l\u00e0 b\u00f3ng c\u1ee7a nhau.<\/span><\/p>\n

    K\u00e9p l\u1ec7ch g\u1ed3m nh\u1eefng s\u1ed1 n\u00e0o?<\/em><\/span><\/h3>\n

    \u1ede tr\u00ean c\u00e1c b\u1ea1n \u0111\u00e3 c\u00f3 c\u00e1c s\u1ed1 l\u00e0 b\u00f3ng c\u1ee7a nhau b\u00e2y gi\u1edd gh\u00e9p m\u1ed7i c\u1eb7p s\u1ed1 l\u1ea1i c\u00e1c b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c 2 c\u1eb7p s\u1ed1 k\u00e9p l\u1ec7ch kh\u00e1c nhau bao g\u1ed3m c\u00e1c s\u1ed1 l\u1ed9n.<\/span><\/p>\n

    V\u00ed d\u1ee5:<\/em> 0<\/strong> v\u00e0 5<\/strong> l\u00e0 b\u00f3ng c\u1ee7a nhau ta s\u1ebd gh\u00e9p l\u1ea1i \u0111\u01b0\u1ee3c 2 c\u1eb7p k\u00e9p l\u1ec7ch l\u00e0 05<\/strong> v\u00e0 50<\/strong>.<\/span><\/p>\n

    Nh\u01b0 v\u1eady ch\u00fang ta s\u1ebd c\u00f3 t\u1ea5t c\u00e1c nh\u1eefng s\u1ed1 k\u00e9p l\u1ec7ch nh\u01b0 sau: 05, 50, 16, 61, 27, 72, 38, 83, 49, 94<\/strong><\/span><\/p>\n

    C\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1eb9o nh\u1edb c\u00e1c c\u1eb7p k\u00e9p l\u1ec7ch \u0111\u00f3 l\u00e0 nh\u1eefng c\u1eb7p s\u1ed1 n\u00e0y l\u00e0 2 s\u1ed1 ch\u00eanh nhau 5 \u0111\u01a1n v\u1ecb.<\/span><\/p>\n

    S\u00e1t k\u00e9p<\/span><\/h2>\n

    S\u00e1t k\u00e9p hi\u1ec3u \u0111\u01a1n gi\u1ea3n l\u00e0 s\u1ed1 li\u1ec1n k\u1ec1 tr\u00ean v\u00e0 li\u1ec1n k\u1ec1 d\u01b0\u1edbi c\u1ee7a s\u1ed1 k\u00e9p tr\u00ean tr\u1ee5c s\u1ed1, hay n\u00f3i c\u00e1ch kh\u00e1c l\u00e0 l\u1ea5y s\u1ed1 k\u00e9p c\u00e1c b\u1ea1n +1 v\u00e0 -1 s\u1ebd ra \u0111\u01b0\u1ee3c 2 s\u1ed1 s\u00e1t k\u00e9p kh\u00e1c. Tuy nhi\u00ean do ch\u00fang ta c\u00f3 c\u1ea3 k\u00e9p b\u1eb1ng v\u00e0 k\u00e9o l\u1ec7ch n\u00ean s\u00e1t k\u00e9p c\u0169ng \u0111\u01b0\u1ee3c chia l\u00e0m 2 b\u1ed9 s\u1ed1 l\u00e0 s\u00e1t k\u00e9p b\u1eb1ng v\u00e0 s\u00e1t k\u00e9p l\u1ec7ch.<\/span><\/p>\n

    S\u00e1t k\u00e9p b\u1eb1ng<\/span><\/h2>\n

    B\u1ed9 s\u1ed1 s\u00e1t k\u00e9p b\u1eb1ng g\u1ed3m 20 s\u1ed1.<\/strong> Trong b\u1ed9 s\u1ed1 n\u00e0y c\u00f3 nhi\u1ec1u n\u01a1i kh\u00f4ng t\u00ednh 09<\/strong> v\u00e0 90<\/strong> l\u00e0 k\u00e9p b\u1eb1ng n\u00ean c\u00e1ch b\u1ea1n c\u1ea7n h\u1ecfi tr\u01b0\u1edbc khi ch\u01a1i.<\/span><\/p>\n

    G\u1ed3m c\u00e1c b\u1ed9 s\u1ed1 sau: 01,10,12, 21, 23, 32, 34, 43, 54, 45, 65, 56, 67, 76, 78, 87, 89, 98, 09, 90<\/strong><\/span><\/p>\n

    S\u00e1t k\u00e9p l\u1ec7ch<\/span><\/h2>\n

    T\u01b0\u01a1ng t\u1ef1 s\u00e1t k\u00e9p b\u1eb1ng, b\u1ed9 s\u00e1t k\u00e9p l\u1ec7ch c\u0169ng c\u00f3 20 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<\/strong><\/span><\/p>\n

    Nh\u01b0 v\u1eady c\u00f3 th\u1ec3 th\u1ea5y v\u1ec1 sau ng\u01b0\u1eddi ta c\u00e0ng s\u00e1ng t\u1ea1o th\u00eam nhi\u1ec1u b\u1ed9 s\u1ed1 k\u00e9p kh\u00e1c \u0111\u1ec3 ph\u1ee5c v\u1ee5 nhu c\u1ea7u soi c\u1ea7u c\u1ee7a m\u00ecnh.<\/span><\/p>\n

    K\u00e9p \u00e2m<\/span><\/h2>\n

    \"c\u00e1c<\/span><\/p>\n

    B\u1ed9 b\u00f3ng \u00e2m<\/em><\/span><\/h3>\n

    B\u1ed9 b\u00f3ng c\u1ee7a nhau b\u00ean tr\u00ean m\u00e0 ch\u00fang t\u00f4i gi\u1edbi thi\u1ec7u \u0111\u00f3 l\u00e0 b\u1ed9 s\u1ed1 b\u00f3ng d\u01b0\u01a1ng. Ngo\u00e0i ra, ng\u01b0\u1eddi ta c\u00f2n s\u00e1ng t\u1ea1o 1 b\u1ed9 s\u1ed1 b\u00f3ng kh\u00e1c l\u00e0 b\u00f3ng \u00e2m d\u1ef1a theo thuy\u1ebft \u00e2m d\u01b0\u01a1ng ng\u0169 h\u00e0nh. V\u1edbi b\u1ed9 b\u00f3ng d\u01b0\u01a1ng l\u00e0 ch\u00eanh nhau 5 \u0111\u01a1n v\u1ecb th\u00ec b\u1ed9 b\u00f3ng \u00e2m n\u00e0y s\u1ebd ch\u00eanh nhau 7 \u0111\u01a1n v\u1ecb. Nh\u01b0 v\u1eady ch\u00fang ta s\u1ebd c\u00f3 c\u00e1c s\u1ed1 sau l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau<\/span><\/p>\n