D\u00f9 b\u1ea1n \u0111\u00e1nh l\u00f4 \u0111\u1ec1 mi\u1ec1n b\u1eafc \u2013 mi\u1ec1n trung \u2013 hay mi\u1ec1n nam. B\u1ea1n c\u0169ng kh\u00f4ng th\u1ec3 n\u00e0o c\u1ee9 th\u1ebf ch\u1ecdn b\u1eeba 1 con s\u1ed1 \u0111\u1ec3 \u0111\u00e1nh \u0111\u00e1nh. M\u00e0 \u0111\u1ec1u c\u1ea7n soi k\u1ebft qu\u1ea3 m\u1ed7i ng\u00e0y \u2013 xem n\u00f3 c\u00f3 \u0111ang \u0111i theo quy lu\u1eadt g\u00ec kh\u00f4ng? Hay n\u00f3 \u0111i theo c\u1ea7u nh\u01b0 th\u1ebf n\u00e0o? Hay b\u1ea1n m\u01a1 th\u00ec \u0111\u00e1nh con g\u00ec\u2026.<\/p>\n
Theo nh\u00e0 c\u00e1i uy t\u00edn \u2013 \u0111\u1ecba ch\u1ec9 \u0111\u00e1nh l\u00f4 \u0111\u1ec1 online t\u1ef7 l\u1ec7 \u0103n cao nh\u1ea5t hi\u1ec7n nay th\u00ec: \u0110\u00e1nh l\u00f4 \u0111\u1ec1 mi\u1ec1n nam n\u00ean ch\u1ecdn theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p suy lu\u1eadn sau. Ch\u1eafc ch\u1eafn s\u1ebd mang t\u1ef7 l\u1ec7 th\u1eafng cao h\u01a1n r\u1ea5t r\u1ea5t nhi\u1ec1u cho ng\u01b0\u1eddi ch\u01a1i.<\/p>\n
1 \u0110\u00e1nh l\u00f4 \u0111\u1ec1 theo l\u00f4 r\u01a1i:<\/span><\/h3>\nB\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng soi c\u1ea7u lo r\u01a1i khi soi c\u1ea7u mi\u1ec1n Nam ho\u1eb7c c\u1ea3 soi c\u1ea7u mi\u1ec1n B\u1eafc. \u0110\u1ec3 \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, b\u1ea1n c\u1ea7n hi\u1ec3u v\u00e0 c\u1ea7n c\u00f3 nh\u1eefng g\u00ec? R\u1ea5t \u0111\u01a1n gi\u1ea3n th\u00f4i, soi c\u1ea7u l\u00f4 r\u01a1i bao g\u1ed3m soi c\u1ea7u l\u00f4 r\u01a1i t\u1eeb \u0111\u1ec1 v\u00e0 soi c\u1ea7u l\u00f4 r\u01a1i t\u1eeb l\u00f4.<\/p>\n
L\u00f4 r\u01a1i t\u1eeb \u0111\u1ec1 mi\u1ec1n nam l\u00e0 b\u1ea1n l\u1ea5y 2 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 \u0111\u00e1nh l\u00f4 cho ng\u00e0y h\u00f4m sau. N\u1ebfu b\u1ea1n th\u1ea5y \u0111\u01b0\u1ee3c 2 h\u00f4m tr\u01b0\u1edbc l\u00f4 r\u01a1i t\u1eeb \u0111\u1ec1 ra th\u00ec h\u00f4m th\u1ee9 3 b\u1ea1n n\u00ean \u0111\u00e1nh theo.<\/p>\n
L\u00f4 r\u01a1i t\u1eeb l\u00f4 l\u00e0 \u1edf 1 v\u00ed tr\u00ed c\u1ee7a gi\u1ea3i n\u00e0o \u0111\u00f3 trong c\u00e1c gi\u1ea3i x\u1ed5 s\u1ed1 c\u00f2n l\u1ea1i. N\u00f3 tr\u00f9ng l\u1eb7p vi\u1ec7c ra l\u00f4 ng\u00e0y h\u00f4m sau \u1edf v\u1ecb tr\u00ed \u0111\u00f3 ho\u1eb7c \u1edf nh\u1eefng con trong gi\u1ea3i \u0111\u00f3. H\u00f4m ti\u1ebfp theo b\u1ea1n ch\u01a1i l\u00f4 r\u01a1i t\u1eeb l\u00f4. \u0110\u1eb7c bi\u1ec7t c\u1ea7u n\u00e0y n\u00ean \u0111\u00e1nh li\u00ean ti\u1ebfp \u0111\u1ebfn bao gi\u1edd tr\u01b0\u1ee3t th\u00ec th\u00f4i. Tr\u00fang 1 ng\u00e0y th\u00ec n\u00ean h\u1ea1 ti\u1ec1n \u0111\u00e1nh c\u1ea7u n\u00e0y xu\u1ed1ng m\u00e0 ch\u00eam th\u00eam c\u1ea7u kh\u00e1c n\u1eefa.<\/p>\n
2\/ \u0110\u00e1nh l\u00f4 mi\u1ec1n nam theo d\u1ea1ng s\u1ed1<\/span><\/h3>\nPh\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u n\u00e0y ch\u1ec9 \u00e1p d\u1ee5ng cho c\u00e1c gi\u1ea3i 4 \u0111\u1ebfn 5 s\u1ed1 (trong \u0111\u00f3 th\u00ec gi\u1ea3i 4 v\u00e0 gi\u1ea3i 5 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang cao nh\u1ea5t), c\u00e1ch \u0111\u00e1nh nh\u01b0 sau:<\/p>\n
\u2013 N\u1ebfu th\u1ea5y trong c\u00e1c gi\u1ea3i m\u1edf th\u01b0\u1edfng c\u1ee7a ng\u00e0y h\u00f4m tr\u01b0\u1edbc m\u00e0 xu\u1ea5t hi\u1ec7n gi\u1ea3i c\u00f3 2 s\u1ed1 \u0111\u01a1n v\u1ecb gh\u00e9p l\u1ea1i v\u1edbi nhau, \u0111\u00e1nh c\u1eb7p s\u1ed1 \u0111\u00f3 trong 3 ng\u00e0y ti\u1ebfp theo.<\/p>\n
3\/ Ch\u01a1i c\u1ea7u b\u1ea1ch th\u1ee7 \u1edf 1 \u0111\u00e0i<\/span><\/h3>\nSoi c\u1ea7u b\u1ea1ch th\u1ee7 ph\u1ee9c t\u1ea1p h\u01a1n 2 ph\u01b0\u01a1ng ph\u00e1p tr\u00ean nh\u01b0ng c\u0169ng kh\u00f4ng h\u1ec1 kh\u00f3. 2 c\u00e1ch soi c\u1ea7u b\u1ea1ch th\u1ee7 ph\u1ed5 bi\u1ebft nh\u1ea5t l\u00e0 soi c\u1ea7u b\u1ea1ch th\u1ee7 l\u00f4 k\u00e9p v\u00e0 soi c\u1ea7u b\u1ea1ch th\u1ee7 h\u00ecnh qu\u1ea3 tr\u00e1m.<\/p>\n
B\u1ea1n s\u1ebd ch\u1ec9 \u0111\u00e1nh \u1edf 1 \u0111\u00e0i m\u00ecnh soi th\u00f4i. Ch\u1ee9 kh\u00f4ng \u00e1p d\u1ee5ng con b\u1ea1ch th\u1ee7 \u0111\u00f3 \u0111\u1ec3 \u0111\u00e1nh bao l\u00f4 nhi\u1ec1u \u0111\u00e0i. B\u1edfi soi c\u1ea7u b\u1ea1ch th\u1ee7 n\u00f3 d\u1ef1a tr\u00ean nhi\u1ec1u y\u1ebfu t\u1ed1. C\u00f3 th\u1ec3 \u1edf \u0111\u00e0i n\u00e0y c\u00f3 m\u00e0 \u0111\u00e0i kia kh\u00f4ng c\u00f3. Ch\u1ec9 tr\u1eeb khi b\u1ea1n ph\u00e2n t\u00edch \u1edf nhi\u1ec1u \u0111\u00e0i ra k\u1ebft qu\u1ea3 gi\u1ed1ng nhau th\u00ec khi \u1ea5y m\u1edbi ch\u01a1i bao l\u00f4.<\/p>\n
4\/ \u0110\u00e1nh l\u00f4 theo ng\u00e0y \u2013 theo \u0111\u00e0i<\/span><\/h3>\n<\/p>\n
S\u1eed d\u1ee5ng c\u00e1ch \u0111\u00e1nh theo ng\u00e0y nh\u01b0 sau: Khi th\u1ea5y \u0111\u1ea7u gi\u1ea3i 7 v\u00e0 \u0111u\u00f4i gi\u1ea3i 7 c\u1ee7a 1 ho\u1eb7c 2 t\u1ec9nh b\u1eb1ng nhau th\u00ec l\u1ea5y s\u1ed1 \u0111\u00f3 gh\u00e9p l\u1ea1i v\u1edbi s\u1ed1 gi\u1eefa c\u1ee7a c\u00e1c t\u1ec9nh ng\u00e0y h\u00f4m \u0111\u00f3 nu\u00f4i cho h\u00f4m sau.<\/p>\n
Ho\u1eb7c c\u1ee9 v\u00e0o ng\u00e0y n\u00e0y trong tu\u1ea7n \u2013 v\u1edbi \u0111\u00e0i A ho\u1eb7c \u0111\u00e0i B. B\u1ea1n s\u1ebd ch\u01a1i 1 nh\u00f3m g\u1ed3m v\u00e0i con. Tu\u1ea7n n\u00e0o c\u0169ng \u0111\u00e1nh nh\u01b0 v\u1eady. T\u1ef7 l\u1ec7 tr\u00fang c\u0169ng kh\u00e1 cao. Nh\u01b0ng n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o t\u1ed1t nh\u01b0 nh\u1eefng c\u1ea7u kh\u00e1c k\u1ec3 tr\u00ean.<\/p>\n
VD: Ng\u00e0y 8\/7\/2024 ta c\u00f3 H\u1eadu Giang c\u00f3 gi\u1ea3i 7 l\u00e0 151, \u0111\u1ea7u \u0111u\u00f4i b\u1eb1ng nhau.<\/p>\n
S\u1ed1 gi\u1eefa c\u1ee7a c\u00e1c gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 08, 59, 69 v\u00e0 55.<\/p>\n
Ta c\u00f3 d\u00e0n l\u00f4 \u0111\u1ec1 l\u00e0 101, 181, 151, 161, 191<\/p>\n
K\u1ebft qu\u1ea3 ng\u00e0y 9\/8 nh\u01b0 sau:<\/p>\n
Ti\u1ec1n Giang v\u1ec1 81<\/p>\n
Ki\u00ean Giang v\u1ec1 01, 81, 91.<\/p>\n
\u0110\u00e0 L\u1ea1t v\u1ec1 51.<\/p>\n
5\/ Soi c\u1ea7u l\u00f4 b\u1eb1ng c\u00e1ch t\u00ednh ng\u00e0y \u00e2m<\/span><\/h3>\nC\u00e1ch n\u00e0y r\u1ea5t l\u00e0 ph\u1ed5 bi\u1ebfn nha. V\u00ec Vi\u1ec7t Nam ta l\u00e0 n\u01b0\u1edbc \u00c1 \u0110\u00f4ng v\u1eabn chu\u1ed9ng l\u1ecbch \u00e2m v\u00e0 th\u01b0\u1eddng d\u00f9ng l\u1ecbch \u00e2m \u0111\u1ec3 chi\u00eam tinh trong \u0111\u00f3 c\u00f3 c\u1ea3 vi\u1ec7c t\u00ednh s\u1ed1 \u0111\u1ec1.<\/p>\n
C\u00e1ch t\u00ednh s\u1ed1 \u0111\u1ec1 theo ng\u00e0y \u00e2m nh\u01b0 sau:<\/p>\n
Ta x\u00e9t theo 12 can chi theo th\u1ee9 t\u1ef1: Gi\u00e1p \u2013 1, \u1ea4t \u2013 2, B\u00ednh \u2013 3, \u0110inh \u2013 4, M\u1eadu -5, K\u1ef7 \u2013 6, Canh -7, T\u00e2n -8, Nh\u00e2m -9, Qu\u00ed -10.<\/p>\n
X\u00e9t theo 12 con gi\u00e1p c\u00f3 th\u1ee9 t\u1ef1: T\u00fd- 1, S\u1eedu \u2013 2, D\u1ea7n -3, M\u00e3o \u2013 4, Th\u00ecn -5, T\u1ecb-6, Ng\u1ecd-7, M\u00f9i-8, Th\u00e2n -9 D\u1eadu -10, Tu\u1ea5t -11, H\u1ee3i -12.<\/p>\n
\u0110\u1ec3 soi c\u1ea7u l\u00f4 \u0111\u1ec1 h\u00f4m nay b\u1ea1n h\u00e3y xem n\u00f3 l\u00e0 ng\u00e0y g\u00ec. V\u00ed d\u1ee5 nay l\u00e0 ng\u00e0y canh th\u00e2n ta s\u1ebd x\u1ebfp th\u1ee9 t\u1ef1: Canh = 7, Th\u00e2n = 9. V\u1eady ta s\u1ebd \u0111\u01b0\u1ee3c con l\u00f4 79 l\u00e0m b\u1ea1ch th\u1ee7 h\u00f4m nay.<\/p>\n
Tuy nhi\u00ean, c\u00e1ch b\u1eaft b\u1ea1ch th\u1ee7 theo ng\u00e0y \u00e2m n\u00e0y ch\u1ec9 n\u00ean s\u1eed d\u1ee5ng v\u00e0o c\u00e1c ng\u00e0y \u0111\u1eb7c bi\u1ec7t nh\u01b0: gi\u1ed7 t\u1ed7, vu lan, h\u00f4m r\u1eb1m, m\u00f9ng 1, t\u1ebft thanh minh, t\u1ebft trung thu\u2026.<\/p>\n
C\u00e1ch \u0111\u00e1nh l\u00f4 \u0111\u1ec1 mi\u1ec1n nam d\u1ea1ng n\u00e0y v\u00e0o nh\u1eefng ng\u00e0y \u0111\u1eb7c bi\u1ec7t mang t\u1ef7 l\u1ec7 tr\u00fang cao h\u01a1n. B\u1edfi n\u00f3 nh\u01b0 m\u1ed9t d\u1ea1ng m\u1edf s\u1ed1 truy\u1ec1n th\u1ed1ng \u0111\u1ec3 t\u01b0\u1edfng nh\u1edb v\u1eady. N\u00ean n\u1ebfu b\u1ea1n nh\u1edb th\u00ec ch\u00fang ta s\u1ebd c\u00f3 k\u1ebft qu\u1ea3 cao \u0111\u1ea5y nh\u00e9.<\/p>\n<\/div>\n<\/div>\n
d\u1ecbch v\u1ee5 c\u1ea7u ch\u1ed1t s\u1ed1 mi\u1ec1n b\u1eafc <\/span><\/h2>\n
Ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u n\u00e0y ch\u1ec9 \u00e1p d\u1ee5ng cho c\u00e1c gi\u1ea3i 4 \u0111\u1ebfn 5 s\u1ed1 (trong \u0111\u00f3 th\u00ec gi\u1ea3i 4 v\u00e0 gi\u1ea3i 5 c\u00f3 t\u1ef7 l\u1ec7 tr\u00fang cao nh\u1ea5t), c\u00e1ch \u0111\u00e1nh nh\u01b0 sau:<\/p>\n
\u2013 N\u1ebfu th\u1ea5y trong c\u00e1c gi\u1ea3i m\u1edf th\u01b0\u1edfng c\u1ee7a ng\u00e0y h\u00f4m tr\u01b0\u1edbc m\u00e0 xu\u1ea5t hi\u1ec7n gi\u1ea3i c\u00f3 2 s\u1ed1 \u0111\u01a1n v\u1ecb gh\u00e9p l\u1ea1i v\u1edbi nhau, \u0111\u00e1nh c\u1eb7p s\u1ed1 \u0111\u00f3 trong 3 ng\u00e0y ti\u1ebfp theo.<\/p>\n
3\/ Ch\u01a1i c\u1ea7u b\u1ea1ch th\u1ee7 \u1edf 1 \u0111\u00e0i<\/span><\/h3>\nSoi c\u1ea7u b\u1ea1ch th\u1ee7 ph\u1ee9c t\u1ea1p h\u01a1n 2 ph\u01b0\u01a1ng ph\u00e1p tr\u00ean nh\u01b0ng c\u0169ng kh\u00f4ng h\u1ec1 kh\u00f3. 2 c\u00e1ch soi c\u1ea7u b\u1ea1ch th\u1ee7 ph\u1ed5 bi\u1ebft nh\u1ea5t l\u00e0 soi c\u1ea7u b\u1ea1ch th\u1ee7 l\u00f4 k\u00e9p v\u00e0 soi c\u1ea7u b\u1ea1ch th\u1ee7 h\u00ecnh qu\u1ea3 tr\u00e1m.<\/p>\n
B\u1ea1n s\u1ebd ch\u1ec9 \u0111\u00e1nh \u1edf 1 \u0111\u00e0i m\u00ecnh soi th\u00f4i. Ch\u1ee9 kh\u00f4ng \u00e1p d\u1ee5ng con b\u1ea1ch th\u1ee7 \u0111\u00f3 \u0111\u1ec3 \u0111\u00e1nh bao l\u00f4 nhi\u1ec1u \u0111\u00e0i. B\u1edfi soi c\u1ea7u b\u1ea1ch th\u1ee7 n\u00f3 d\u1ef1a tr\u00ean nhi\u1ec1u y\u1ebfu t\u1ed1. C\u00f3 th\u1ec3 \u1edf \u0111\u00e0i n\u00e0y c\u00f3 m\u00e0 \u0111\u00e0i kia kh\u00f4ng c\u00f3. Ch\u1ec9 tr\u1eeb khi b\u1ea1n ph\u00e2n t\u00edch \u1edf nhi\u1ec1u \u0111\u00e0i ra k\u1ebft qu\u1ea3 gi\u1ed1ng nhau th\u00ec khi \u1ea5y m\u1edbi ch\u01a1i bao l\u00f4.<\/p>\n
4\/ \u0110\u00e1nh l\u00f4 theo ng\u00e0y \u2013 theo \u0111\u00e0i<\/span><\/h3>\n<\/p>\n
S\u1eed d\u1ee5ng c\u00e1ch \u0111\u00e1nh theo ng\u00e0y nh\u01b0 sau: Khi th\u1ea5y \u0111\u1ea7u gi\u1ea3i 7 v\u00e0 \u0111u\u00f4i gi\u1ea3i 7 c\u1ee7a 1 ho\u1eb7c 2 t\u1ec9nh b\u1eb1ng nhau th\u00ec l\u1ea5y s\u1ed1 \u0111\u00f3 gh\u00e9p l\u1ea1i v\u1edbi s\u1ed1 gi\u1eefa c\u1ee7a c\u00e1c t\u1ec9nh ng\u00e0y h\u00f4m \u0111\u00f3 nu\u00f4i cho h\u00f4m sau.<\/p>\n
Ho\u1eb7c c\u1ee9 v\u00e0o ng\u00e0y n\u00e0y trong tu\u1ea7n \u2013 v\u1edbi \u0111\u00e0i A ho\u1eb7c \u0111\u00e0i B. B\u1ea1n s\u1ebd ch\u01a1i 1 nh\u00f3m g\u1ed3m v\u00e0i con. Tu\u1ea7n n\u00e0o c\u0169ng \u0111\u00e1nh nh\u01b0 v\u1eady. T\u1ef7 l\u1ec7 tr\u00fang c\u0169ng kh\u00e1 cao. Nh\u01b0ng n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o t\u1ed1t nh\u01b0 nh\u1eefng c\u1ea7u kh\u00e1c k\u1ec3 tr\u00ean.<\/p>\n
VD: Ng\u00e0y 8\/7\/2024 ta c\u00f3 H\u1eadu Giang c\u00f3 gi\u1ea3i 7 l\u00e0 151, \u0111\u1ea7u \u0111u\u00f4i b\u1eb1ng nhau.<\/p>\n
S\u1ed1 gi\u1eefa c\u1ee7a c\u00e1c gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 08, 59, 69 v\u00e0 55.<\/p>\n
Ta c\u00f3 d\u00e0n l\u00f4 \u0111\u1ec1 l\u00e0 101, 181, 151, 161, 191<\/p>\n
K\u1ebft qu\u1ea3 ng\u00e0y 9\/8 nh\u01b0 sau:<\/p>\n
Ti\u1ec1n Giang v\u1ec1 81<\/p>\n
Ki\u00ean Giang v\u1ec1 01, 81, 91.<\/p>\n
\u0110\u00e0 L\u1ea1t v\u1ec1 51.<\/p>\n
5\/ Soi c\u1ea7u l\u00f4 b\u1eb1ng c\u00e1ch t\u00ednh ng\u00e0y \u00e2m<\/span><\/h3>\nC\u00e1ch n\u00e0y r\u1ea5t l\u00e0 ph\u1ed5 bi\u1ebfn nha. V\u00ec Vi\u1ec7t Nam ta l\u00e0 n\u01b0\u1edbc \u00c1 \u0110\u00f4ng v\u1eabn chu\u1ed9ng l\u1ecbch \u00e2m v\u00e0 th\u01b0\u1eddng d\u00f9ng l\u1ecbch \u00e2m \u0111\u1ec3 chi\u00eam tinh trong \u0111\u00f3 c\u00f3 c\u1ea3 vi\u1ec7c t\u00ednh s\u1ed1 \u0111\u1ec1.<\/p>\n
C\u00e1ch t\u00ednh s\u1ed1 \u0111\u1ec1 theo ng\u00e0y \u00e2m nh\u01b0 sau:<\/p>\n
Ta x\u00e9t theo 12 can chi theo th\u1ee9 t\u1ef1: Gi\u00e1p \u2013 1, \u1ea4t \u2013 2, B\u00ednh \u2013 3, \u0110inh \u2013 4, M\u1eadu -5, K\u1ef7 \u2013 6, Canh -7, T\u00e2n -8, Nh\u00e2m -9, Qu\u00ed -10.<\/p>\n
X\u00e9t theo 12 con gi\u00e1p c\u00f3 th\u1ee9 t\u1ef1: T\u00fd- 1, S\u1eedu \u2013 2, D\u1ea7n -3, M\u00e3o \u2013 4, Th\u00ecn -5, T\u1ecb-6, Ng\u1ecd-7, M\u00f9i-8, Th\u00e2n -9 D\u1eadu -10, Tu\u1ea5t -11, H\u1ee3i -12.<\/p>\n
\u0110\u1ec3 soi c\u1ea7u l\u00f4 \u0111\u1ec1 h\u00f4m nay b\u1ea1n h\u00e3y xem n\u00f3 l\u00e0 ng\u00e0y g\u00ec. V\u00ed d\u1ee5 nay l\u00e0 ng\u00e0y canh th\u00e2n ta s\u1ebd x\u1ebfp th\u1ee9 t\u1ef1: Canh = 7, Th\u00e2n = 9. V\u1eady ta s\u1ebd \u0111\u01b0\u1ee3c con l\u00f4 79 l\u00e0m b\u1ea1ch th\u1ee7 h\u00f4m nay.<\/p>\n
Tuy nhi\u00ean, c\u00e1ch b\u1eaft b\u1ea1ch th\u1ee7 theo ng\u00e0y \u00e2m n\u00e0y ch\u1ec9 n\u00ean s\u1eed d\u1ee5ng v\u00e0o c\u00e1c ng\u00e0y \u0111\u1eb7c bi\u1ec7t nh\u01b0: gi\u1ed7 t\u1ed7, vu lan, h\u00f4m r\u1eb1m, m\u00f9ng 1, t\u1ebft thanh minh, t\u1ebft trung thu\u2026.<\/p>\n
C\u00e1ch \u0111\u00e1nh l\u00f4 \u0111\u1ec1 mi\u1ec1n nam d\u1ea1ng n\u00e0y v\u00e0o nh\u1eefng ng\u00e0y \u0111\u1eb7c bi\u1ec7t mang t\u1ef7 l\u1ec7 tr\u00fang cao h\u01a1n. B\u1edfi n\u00f3 nh\u01b0 m\u1ed9t d\u1ea1ng m\u1edf s\u1ed1 truy\u1ec1n th\u1ed1ng \u0111\u1ec3 t\u01b0\u1edfng nh\u1edb v\u1eady. N\u00ean n\u1ebfu b\u1ea1n nh\u1edb th\u00ec ch\u00fang ta s\u1ebd c\u00f3 k\u1ebft qu\u1ea3 cao \u0111\u1ea5y nh\u00e9.<\/p>\n<\/div>\n<\/div>\n
d\u1ecbch v\u1ee5 c\u1ea7u ch\u1ed1t s\u1ed1 mi\u1ec1n b\u1eafc <\/span><\/h2>\n
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S\u1eed d\u1ee5ng c\u00e1ch \u0111\u00e1nh theo ng\u00e0y nh\u01b0 sau: Khi th\u1ea5y \u0111\u1ea7u gi\u1ea3i 7 v\u00e0 \u0111u\u00f4i gi\u1ea3i 7 c\u1ee7a 1 ho\u1eb7c 2 t\u1ec9nh b\u1eb1ng nhau th\u00ec l\u1ea5y s\u1ed1 \u0111\u00f3 gh\u00e9p l\u1ea1i v\u1edbi s\u1ed1 gi\u1eefa c\u1ee7a c\u00e1c t\u1ec9nh ng\u00e0y h\u00f4m \u0111\u00f3 nu\u00f4i cho h\u00f4m sau.<\/p>\n
Ho\u1eb7c c\u1ee9 v\u00e0o ng\u00e0y n\u00e0y trong tu\u1ea7n \u2013 v\u1edbi \u0111\u00e0i A ho\u1eb7c \u0111\u00e0i B. B\u1ea1n s\u1ebd ch\u01a1i 1 nh\u00f3m g\u1ed3m v\u00e0i con. Tu\u1ea7n n\u00e0o c\u0169ng \u0111\u00e1nh nh\u01b0 v\u1eady. T\u1ef7 l\u1ec7 tr\u00fang c\u0169ng kh\u00e1 cao. Nh\u01b0ng n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o t\u1ed1t nh\u01b0 nh\u1eefng c\u1ea7u kh\u00e1c k\u1ec3 tr\u00ean.<\/p>\n
VD: Ng\u00e0y 8\/7\/2024 ta c\u00f3 H\u1eadu Giang c\u00f3 gi\u1ea3i 7 l\u00e0 151, \u0111\u1ea7u \u0111u\u00f4i b\u1eb1ng nhau.<\/p>\n
S\u1ed1 gi\u1eefa c\u1ee7a c\u00e1c gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 08, 59, 69 v\u00e0 55.<\/p>\n
Ta c\u00f3 d\u00e0n l\u00f4 \u0111\u1ec1 l\u00e0 101, 181, 151, 161, 191<\/p>\n
K\u1ebft qu\u1ea3 ng\u00e0y 9\/8 nh\u01b0 sau:<\/p>\n
Ti\u1ec1n Giang v\u1ec1 81<\/p>\n
Ki\u00ean Giang v\u1ec1 01, 81, 91.<\/p>\n
\u0110\u00e0 L\u1ea1t v\u1ec1 51.<\/p>\n