X\u1ed5 s\u1ed1, l\u00f4 \u0111\u1ec1 l\u00e0 m\u1ed9t trong nh\u1eefng \u201ctr\u00f2 ch\u01a1i\u201d quen thu\u1ed9c c\u1ee7a ng\u01b0\u1eddi d\u00e2n Vi\u1ec7t Nam. T\u1ea1i \u0111\u00e2y b\u1ea1n kh\u00f4ng ch\u1ec9 ch\u01a1i d\u1ef1a v\u00e0o may m\u1eafn c\u1ee7a m\u00ecnh m\u00e0 c\u00f2n l\u00e0 nh\u1eefng ph\u00e2n t\u00edch k\u1ef9 l\u01b0\u1ee1ng. \u00c1p d\u1ee5ng nh\u1eefng kinh nghi\u1ec7m soi c\u1ea7u c\u1ee7a b\u1ea3n th\u00e2n \u0111\u1ec3 ch\u1ecdn l\u1ef1a ra con s\u1ed1 ph\u00f9 h\u1ee3p \u0111\u1ec3 \u0111\u00e1nh. C\u1ee5 th\u1ec3 trong b\u00e0i vi\u1ebft n\u00e0y l\u00e0 c\u00e1ch <\/span>soi c\u1ea7u l\u00f4 k\u00e9p<\/b> ba mi\u1ec1n<\/b> B\u1eafc, Trung v\u00e0 Nam.<\/span><\/p>\n \u2666 L\u00f4 k\u00e9p l\u00e0 g\u00ec: L\u00f4 k\u00e9p hay l\u00f4 \u0111\u1ec1 k\u00e9p hi\u1ec3u \u0111\u01a1n gi\u1ea3n l\u00e0 ch\u1eef s\u1ed1 v\u00e0 h\u00e0ng \u0111\u01a1n v\u1ecb \u0111\u1ec1u gi\u1ed1ng nhau. C\u00f3 t\u1ed5ng c\u1ed9ng 10 s\u1ed1 k\u00e9p: 00, 11, 22, 33, 44, 55, 66, 77, 88, 99.<\/span><\/p>\n V\u00ed d\u1ee5 trong k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc ng\u00e0y 15\/11\/2024 c\u00f3 c\u00e1c l\u00f4 k\u00e9p l\u00e0 77, 00, 55<\/span><\/p>\n <\/p>\n \u2666 L\u00f4 k\u00e9p ph\u00e2n chia l\u00e0m 3 lo\u1ea1i l\u00e0 l\u00f4 k\u00e9p b\u1eb1ng, l\u00f4 k\u00e9p l\u1ec7ch v\u00e0 s\u00e1t k\u00e9p.<\/span><\/p>\n L\u00f4 k\u00e9p b\u1eb1ng<\/b> ch\u00ednh l\u00e0 l\u00f4 k\u00e9p ph\u1ed5 bi\u1ebfn m\u00e0 ta n\u00f3i tr\u00ean g\u1ed3m c\u00e1c s\u1ed1 00, 11, 22, 33, 44, 55, 66, 77, 88, 99. <\/span><\/p>\n L\u00f4 k\u00e9p l\u1ec7ch<\/b> l\u00e0 g\u00ec: c\u00f3 ch\u1eef s\u1ed1 h\u00e0ng ch\u1ee5c v\u00e0 h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 b\u00f3ng c\u1ee7a nhau.K\u00e9p l\u1ec7ch c\u0169ng bao g\u1ed3m 10 b\u1ed9 s\u1ed1: 05, 50, 16, 61, 27, 72, 38, 83, 49, 94.<\/span><\/p>\n L\u00f4 k\u00e9p \u00e2m <\/b>l\u00e0 nh\u1eefng con s\u1ed1 d\u1ef1a theo b\u00f3ng \u00e2m g\u1ed3m c\u00e1c s\u1ed1 sau: 07, 70, 14, 41, 29, 92, 36, 63, 58, 85. B\u00f3ng \u00e2m c\u1ee7a s\u1ed1 0 l\u00e0 7, 1 l\u00e0 4, 2 l\u00e0 9, 3 l\u00e0 6, 4 l\u00e0 1, 5 l\u00e0 8\u2026<\/span><\/p>\n *B\u00f3ng trong l\u00f4 \u0111\u1ec1 c\u00f3 th\u1ec3 hi\u1ec3u l\u00e0 gi\u1eefa hai s\u1ed1 h\u00e0ng ch\u1ee5c v\u00e0 h\u00e0ng \u0111\u01a1n v\u1ecb c\u00e1ch nhau 5. V\u00ed d\u1ee5 nh\u01b0 c\u1eb7p 05 \u2013 50 th\u00ec 5-0=5 hay s\u1ed1 27 \u2013 72 th\u00ec 7-2=5, t\u01b0\u01a1ng t\u1ef1 cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u00f2n l\u1ea1i. <\/span><\/p>\n Soi c\u1ea7u l\u00f4 k\u00e9p l\u00e0 m\u1ed9t trong nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p d\u1ef1 \u0111o\u00e1n l\u00f4 \u0111\u1ec1 c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao trong s\u1ed1 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u. C\u00e1ch <\/span>soi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n<\/b> s\u1ebd t\u01b0\u01a1ng t\u1ef1 nhau, ch\u00fang bao g\u1ed3m:<\/span><\/p>\n C\u00e1ch n\u00e0y b\u1ea1n xem trong b\u1ea3ng k\u1ebft qu\u1ea3 l\u00f4 2 s\u1ed1 xem c\u00f3 \u0111\u1ea7u n\u00e0o c\u00e2m kh\u00f4ng, n\u1ebfu c\u00f3 1 ho\u1eb7c 2 \u0111\u1ea7u c\u00e2m th\u00ec h\u00f4m sau nu\u00f4i l\u00f4 k\u00e9p c\u1ee7a c\u00e1c \u0111\u1ea7u c\u00e2m \u0111\u00f3.<\/span><\/p>\n VD: H\u00f4m \u0111\u00f3 l\u00f4 \u0111\u1ea7u 3 c\u00e2m th\u00ec ch\u00fang ta h\u00e3y \u0111\u1ec3 \u00fd trong 3 ng\u00e0y ti\u1ebfp theo c\u00f3 v\u1ec1 con 33 kh\u00f4ng, n\u1ebfu kh\u00f4ng v\u1ec1 nu\u00f4i l\u00f4 33 trong 3 ng\u00e0y li\u00ean ti\u1ebfp. Kh\u00f4ng tr\u00fang th\u00ec \u0111\u1ed5i s\u1ed1 kh\u00e1c, kh\u00f4ng theo m\u00e3i.<\/span><\/p>\n *L\u01b0u \u00fd: Kh\u00f4ng \u00e1p d\u1ee5ng v\u1edbi 3 \u0111\u1ea7u c\u00f9ng c\u00e2m tr\u1edf l\u00ean.<\/span><\/p>\n C\u00e1ch soi c\u1ea7u l\u00f4 k\u00e9p d\u1ef1a v\u00e0o \u0111u\u00f4i c\u00e2m c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p tr\u00ean. <\/span><\/p>\n *L\u01b0u \u00fd: N\u1ebfu trong tr\u01b0\u1eddng h\u1ee3p xu\u1ea5t hi\u1ec7n \u0111\u1ea7u c\u00e2m c\u00f9ng trong b\u1ea3ng k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1. Th\u00ec th\u01b0\u1eddng l\u00f4 k\u00e9p mai v\u1ec1 \u01b0u ti\u00ean \u0111\u1ea7u c\u00e2m h\u01a1n \u0111u\u00f4i c\u00e2m.<\/span><\/p>\n \u0110\u00e1nh l\u00f4 k\u00e9p theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t c\u00f3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p nh\u01b0 sau:<\/span><\/p>\n \u2013 N\u1ebfu th\u1ea5y \u0111\u1ec1 v\u1ec1 k\u00e9p th\u00ec trong 3 ng\u00e0y ti\u1ebfp theo ch\u1eafc ch\u1eafn k\u00e9p n\u00e0y s\u1ebd v\u1ec1 l\u00f4.<\/span><\/p>\n V\u00ed d\u1ee5: H\u00f4m nay k\u00e9p 00 v\u1ec1 \u0111\u1ec1, th\u00ec ng\u00e0y ti\u1ebfp theo n\u00f3 s\u1ebd ra l\u00f4.<\/span><\/p>\n \u2013 K\u00e9p c\u1ee7a s\u1ed1 \u0111\u1ea7u ti\u00ean gi\u1ea3i \u0111\u1eb7c bi\u1ec7t ng\u00e0y th\u1ee9 2 th\u01b0\u1eddng r\u01a1i \u00edt nh\u1ea5t 1 l\u1ea7n trong 6 ng\u00e0y c\u00f2n l\u1ea1i.<\/span><\/p>\n V\u00ed d\u1ee5: Ng\u00e0y th\u1ee9 2 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 74580, s\u1ed1 \u0111\u1ea7u l\u00e0 7. Nh\u01b0 v\u1eady k\u00e9p 77 s\u1ebd r\u01a1i trong 6 ng\u00e0y ti\u1ebfp theo \u00edt nh\u1ea5t 1 l\u1ea7n.<\/span><\/p>\n \u2013 N\u1ebfu gi\u1ea3i \u0111\u1eb7c bi\u1ec7t c\u00f3 hai ch\u1eef s\u1ed1 li\u1ec1n nhau. Th\u00ec tr\u01b0\u1eddng h\u1ee3p c\u00f3 l\u00f4 k\u00e9p v\u1ec1 s\u1ebd r\u1ea5t cao v\u00e0 h\u00e3y nu\u00f4i l\u00f4 k\u00e9p \u1ea5y.<\/span><\/p>\n V\u00ed d\u1ee5: Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 56681. Ngh\u0129a l\u00e0 c\u00f3 66 g\u1ea7n nhau th\u00ec ng\u01b0\u1eddi ch\u01a1i n\u00ean nu\u00f4i l\u00f4 k\u00e9p 66 trong v\u00f2ng 3 \u2013 5 ng\u00e0y.<\/span><\/p>\n T\u01b0\u01a1ng t\u1ef1 v\u1edbi gi\u1ea3i nh\u1ea5t b\u1ea1n c\u0169ng soi c\u1ea7u l\u00f4 k\u00e9p nh\u01b0 th\u1ebf n\u00e0y. <\/span><\/p>\n \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u t\u01b0\u01a1ng \u0111\u1ed1i hi\u1ebfm th\u1ea5y tuy nhi\u00ean n\u1ebfu ch\u00fang xu\u1ea5t hi\u1ec7n b\u1ea1n b\u1eaft \u0111\u01b0\u1ee3c s\u1ebd \u0103n r\u1ea5t l\u1edbn. \u0110\u1ec3 b\u1eaft c\u1ea7u l\u00f4 k\u00e9p h\u00ecnh qu\u1ea3 tr\u00e1m th\u00ec ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i th\u1ed1ng k\u00ea k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 c\u00e1c gi\u1ea3i x\u1ebfp li\u1ec1n nhau theo h\u00e0ng d\u1ecdc. C\u1ee5 th\u1ec3 l\u1ea5y k\u1ebft qu\u1ea3 gi\u1ea3i 3, 4 ho\u1eb7c gi\u1ea3i 5 \u0111em s\u1eafp x\u1ebfp theo h\u00e0ng d\u1ecdc th\u00ec ta c\u00f3 hai v\u1ecb tr\u00ed v\u1edbi h\u00ecnh qu\u1ea3 tr\u00e1m. <\/span><\/p>\n Theo th\u1eddi gian b\u1ea1n s\u1ebd t\u00edch l\u0169y th\u00eam kinh nghi\u1ec7m ch\u01a1i ri\u00eang cho b\u1ea1n th\u00e2n \u0111\u1ec3 \u0111\u00e1nh \u0111\u01b0\u1ee3c chu\u1ea9n nh\u1ea5t. C\u00e1c c\u00e1ch <\/span>soi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n<\/b> tr\u00ean s\u1ebd gi\u00fap b\u1ea1n t\u1ef1 tin n\u1eafm ph\u1ea7n th\u1eafng nhi\u1ec1u h\u01a1n m\u1ed7i l\u1ea7n ch\u01a1i. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng. <\/span><\/p>\n <\/p>\n<\/div>\nKh\u00e1i ni\u1ec7m, ph\u00e2n lo\u1ea1i l\u00f4 k\u00e9p<\/i><\/b><\/span><\/h2>\n
C\u00e1ch soi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n<\/i><\/b><\/span><\/h2>\n
\n<\/b>Soi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n theo \u0111\u1ea7u c\u00e2m<\/b>
\n<\/span><\/h3>\nSoi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n theo \u0111u\u00f4i c\u00e2m<\/b><\/span><\/h3>\n
Soi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n theo gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/b><\/span><\/h3>\n
Soi c\u1ea7u l\u00f4 k\u00e9p ba mi\u1ec1n h\u00ecnh qu\u1ea3 tr\u00e1m<\/b><\/span><\/h3>\n
K\u1ebft lu\u1eadn<\/i><\/b><\/span><\/h2>\n