B\u1ed9 s\u1ed1 k\u00e9p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i khi \u0111\u00e1nh l\u00f4 \u0111\u1ec1, l\u00e0 t\u1eadp h\u1ee3p nh\u1eefng l\u00f4 t\u00f4 c\u00f3 2 ch\u1eef s\u1ed1 gi\u1ed1ng nhau.<\/p>\n
Theo \u0111\u00f3, k\u00e9p b\u1eb1ng bao g\u1ed3m 10 s\u1ed1: 00, 11, 22, 33, 44, 55, 66, 77, 88, 99<\/p>\n
Tuy nhi\u00ean \u0111\u1ec3 t\u0103ng hi\u1ec7u qu\u1ea3 soi c\u1ea7u, nh\u1eefng ng\u01b0\u1eddi ch\u01a1i c\u00e1 c\u01b0\u1ee3c c\u00f2n ph\u00e1t tri\u1ec3n th\u00eam c\u00e1c b\u1ed9 s\u1ed1 bi\u1ebfn t\u01b0\u1edbng t\u1eeb K\u00e9p b\u1eb1ng v\u00e0 theo d\u00f5i b\u1ea1c nh\u1edb c\u1ee7a n\u00f3.<\/p>\n
B\u1ed9 s\u1ed1 k\u00e9p m\u1edf r\u1ed9ng<\/h3>\n
C\u00f3 r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i th\u00edch b\u1eaft c\u1ea7u, nu\u00f4i v\u00e0 ch\u01a1i b\u1ed9 s\u1ed1 k\u00e9p. Nh\u01b0ng qua qu\u00e1 tr\u00ecnh ch\u01a1i l\u00f4 \u0111\u1ec1 tr\u1ef1c tuy\u1ebfn, h\u1ecd nh\u1eadn ra r\u1eb1ng c\u1ea7n m\u1edf r\u1ed9ng th\u00eam v\u1ec1 b\u1ed9 s\u1ed1 k\u00e9p. V\u00ec th\u1ebf k\u00e9p b\u1eb1ng, k\u00e9p l\u1ec7ch, s\u00e1t k\u00e9p, s\u00e1t k\u00e9p b\u1eb1ng, s\u00e1t k\u00e9p l\u1ec7ch c\u0169ng xu\u1ea5t hi\u1ec7n t\u1eeb \u0111\u00f3. C\u00e1c b\u1ed9 s\u1ed1 n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n d\u1ef1a tr\u00ean nh\u1eefng kh\u00e1i ni\u1ec7m nh\u01b0 b\u00f3ng s\u1ed1 \u0111\u1ec1.<\/p>\n
Nh\u1eafc t\u1edbi b\u1ed9 s\u1ed1 k\u00e9p b\u1eb1ng th\u00ec n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i \u0111\u1ec1 c\u1eadp \u1edf ph\u1ea7n tr\u00ean. K\u00e9p b\u1eb1ng g\u1ed3m c\u00f3 10 con s\u1ed1 d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n
00, 11, 22, 33, 44, 55, 66, 77, 88, 99<\/p>\n
S\u00e1t k\u00e9p b\u1eb1ng<\/h3>\n
<\/p>\n
G\u1ed3m c\u00e1c s\u1ed1 li\u1ec1n k\u1ec1 tr\u01b0\u1edbc \/ sau c\u1ee7a c\u00e1c k\u00e9p b\u1eb1ng. C\u1ee5 th\u1ec3 g\u1ed3m:<\/p>\n
01, 10, 12, 21, 23, 32, 34, 43, 54, 45, 65, 56, 67, 76, 78, 87, 89, 98<\/p>\n
\u1ede 1 s\u1ed1 Nh\u00e0 c\u00e1i, c\u1eb7p s\u1ed1 09 \u2013 90 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 c\u1ea7u k\u00e9p b\u1eb1ng. Do kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u th\u1ed1ng k\u00ea Nh\u00e0 c\u00e1i n\u00e0o hi\u1ec7n nay \u00e1p d\u1ee5ng c\u00e1ch t\u00ednh th\u00eam c\u1eb7p n\u00e0y n\u00ean ng\u01b0\u1eddi ch\u01a1i t\u1ed1t nh\u1ea5t n\u00ean ch\u1ee7 \u0111\u1ed9ng h\u1ecfi \u0111\u1ec3 c\u00e2n nh\u1eafc \u0111\u00e1nh.<\/p>\n
C\u00e1ch ch\u01a1i \u0111\u1ec1 k\u00e9p b\u1eb1ng hi\u1ec7u qu\u1ea3<\/h2>\n
C\u00e1c chuy\u00ean gia \u0111\u00e3 \u0111\u00fac k\u1ebft ra m\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u b\u00e1o \u0111\u1ec1 v\u1ec1 k\u00e9p nh\u01b0 sau:<\/p>\n
Khi 2 s\u1ed1 \u0111\u1ea7u c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 k\u00e9p th\u00ec \u0111\u00e2y l\u00e0 c\u1ea7u b\u00e1o \u0111\u1ec1 k\u00e9p s\u1ebd v\u1ec1 trong 1 tu\u1ea7n s\u1eafp t\u1edbi v\u00e0 trong v\u00f2ng 7 ng\u00e0y n\u00e0y anh em n\u00ean \u0111\u00e1nh theo c\u00e1ch nu\u00f4i l\u00f4 7 ng\u00e0y.<\/p>\n
Anh em c\u0169ng c\u00f3 th\u1ec3 b\u1ed5 sung th\u00eam m\u1ed9t s\u1ed1 c\u00e1ch ch\u01a1i kh\u00e1c m\u00e0 t\u1ef7 l\u1ec7 tr\u00fang l\u00f4 c\u0169ng r\u1ea5t cao \u0111\u00f3 ch\u00ednh l\u00e0 khi 2 s\u1ed1 \u0111\u1ea7u c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t b\u00e1o k\u00e9p th\u00ec anh em \u0111\u00e1nh con k\u00e9p \u0111\u00f3 v\u00e0 gh\u00e9p c\u00e1c s\u1ed1 l\u1ebb ph\u00eda sau \u0111\u1ec3 t\u1ea1o th\u00e0nh d\u00e0n l\u00f4 \u0111\u1eb9p. V\u00ed d\u1ee5: T\u1eeb d\u1eef li\u1ec7u 22179 th\u00ec \u0111\u00e1nh 12 \u2013 22 \u2013 92 \u2013 72.<\/p>\n
C\u00e1ch ch\u01a1i n\u00e0y \u0111\u00e3 gi\u00fap cho t\u00f4i c\u00f9ng r\u1ea5t nhi\u1ec1u anh em c\u01b0\u1ee3c th\u1ee7 kh\u00e1c c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng th\u00e0nh c\u00f4ng v\u00f4 c\u00f9ng r\u1ef1c r\u1ee1 \u1edf c\u00e1c k\u1ef3 d\u1ef1 \u0111o\u00e1n x\u1ed5 s\u1ed1.<\/p>\n
\u00c1p K\u00e9p<\/h3>\n
L\u00e0 b\u1ed9 s\u1ed1 bao g\u1ed3m nh\u1eefng s\u1ed1 li\u1ec1n tr\u00ean ho\u1eb7c li\u1ec1n d\u01b0\u1edbi c\u1ee7a s\u1ed1 k\u00e9p, h\u01a1n \u0111\u01a1n gi\u1ea3n h\u01a1n \u00e1p k\u00e9p l\u00e0 l\u1ea5y k\u1ebft qu\u1ea3 c\u1ee7a k\u00e9p r\u1ed3i c\u1ed9ng ho\u1eb7c tr\u1eeb 1 \u0111\u01a1n v\u1ecb.<\/p>\n
<\/p>\n
C\u00f3 2 lo\u1ea1i \u00e1p k\u00e9p: \u0111\u00f3 l\u00e0 \u00e1p k\u00e9p b\u1eb1ng v\u00e0 \u00e1p k\u00e9p l\u1ec7ch.<\/p>\n
- \n
- \u00c1p k\u00e9p b\u1eb1ng l\u00e0 nh\u1eefng s\u1ed1 li\u1ec1n k\u1ec1 tr\u00ean ho\u1eb7c d\u01b0\u1edbi c\u1ee7a k\u00e9p b\u1eb1ng n\u00f3 bao g\u1ed3m 18 s\u1ed1:<\/li>\n<\/ul>\n
10, 01, 21,12, 23, 32, 34, 43, 45,54, 56, 65, 67, 76, 78, 87, 89, 98.<\/p>\n
- \n
- \u00c1p k\u00e9p l\u1ec7ch l\u00e0 nh\u1eefng s\u1ed1 li\u1ec1n k\u1ec1 tr\u00ean ho\u1eb7c li\u1ec1n k\u1ec1 d\u01b0\u1edbi c\u1ee7a k\u00e9p l\u1ec7ch bao g\u1ed3m 20 s\u1ed1 sau:<\/li>\n<\/ul>\n
04, 06, 49, 15, 51, 17, 71, 60, 62, 26, 28, 73, 37, 39, 82, 84, 48, 50, 93, 95.<\/p>\n
K\u00e9p \u00c2m<\/h3>\n
C\u0169ng \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n d\u1ef1a tr\u00ean b\u00f3ng \u00e2m v\u00e0 c\u00f3 c\u00e1c c\u1eb7p b\u00f3ng \u00e2m nh\u01b0 sau:<\/p>\n
S\u1ed1 7 v\u00e0 0 l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau.<\/p>\n
S\u1ed1 1 v\u00e0 4 l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau.<\/p>\n
S\u1ed1 9 v\u00e0 2 l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau.<\/p>\n
S\u1ed1 6 v\u00e0 3 l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau.<\/p>\n
S\u1ed1 8 v\u00e0 5 l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau.<\/p>\n
T\u1eeb b\u1ed9 s\u1ed1 b\u00f3ng \u00e2m ta c\u00f3 th\u1ec3 hi\u1ec3u k\u00e9p \u00e2m l\u00e0 s\u1ed1 m\u00e0 2 ch\u1eef s\u1ed1 c\u1ee7a n\u00f3 l\u00e0 b\u00f3ng \u00e2m c\u1ee7a nhau, n\u00f3 bao g\u1ed3m c\u00e1c s\u1ed1:<\/p>\n
07, 70, 14, 41, 29, 92, 36, 63, 58, 85<\/p>\n
Tr\u00ean \u0111\u00e2y l\u00e0 b\u00e0i vi\u1ebft \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 b\u1ed9 s\u1ed1 k\u00e9p, hy v\u1ecdng n\u00f3 s\u1ebd gi\u00fap \u00edch cho b\u1ea1n trong vi\u1ec7c ch\u01a1i l\u00f4 \u0111\u1ec1.<\/p>\n<\/div>\n
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ch\u1ed1t s\u1ed1 mi\u1ec1n b\u1eafc\u00a0t\u1ef1 tin tr\u00fang h\u00f4m nay<\/span><\/strong><\/h4>\n
- \u00c1p k\u00e9p l\u1ec7ch l\u00e0 nh\u1eefng s\u1ed1 li\u1ec1n k\u1ec1 tr\u00ean ho\u1eb7c li\u1ec1n k\u1ec1 d\u01b0\u1edbi c\u1ee7a k\u00e9p l\u1ec7ch bao g\u1ed3m 20 s\u1ed1 sau:<\/li>\n<\/ul>\n