1. \u0110\u00e1nh \u0111\u1ea7u \u0111u\u00f4i s\u1ed1 \u0111\u1ec1 l\u00e0 g\u00ec?<\/h2>\n
C\u00e1ch t\u00ednh \u0111\u1ec1 \u0111\u1ea7u \u0111u\u00f4i s\u1ed1 \u0111\u1ec1 m\u1edbi nghe th\u00ec kh\u00f3 h\u01a1n so v\u1edbi nh\u1eefng c\u00e1ch soi c\u1ea7u kh\u00e1c. \u0110\u00e1nh \u0111\u1ec1 \u0111\u1ea7u \u0111u\u00f4i l\u00e0 sao? \u0110\u00e2y l\u00e0 c\u00e1ch m\u00e0 b\u1ea1n gh\u00e9p s\u1ed1 \u0111\u1ea7u v\u00e0 2 s\u1ed1 cu\u1ed1i c\u1ee7a s\u1ed1 \u0111\u1ec1 v\u1ec1 trong ng\u00e0y. Sau \u0111\u00f3 t\u00ecm ra c\u1eb7p s\u1ed1 \u01b0ng \u00fd nh\u1ea5t r\u1ed3i ch\u1ed1t \u0111\u1ec1 v\u00e0 \u0111\u1ee3i n\u1ed5 ra th\u00f4i.<\/p>\n
V\u1edbi hai con s\u1ed1 n\u00e0y, s\u1ed1 \u0111\u1ea7u \u0111u\u00f4i l\u00e0 g\u00ec? S\u1ed1 \u1edf h\u00e0ng ch\u1ee5c l\u00e0 \u0111\u1ea7u, s\u1ed1 \u1edf h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 \u0111u\u00f4i l\u00f4 \u0111\u1ec1. Ng\u01b0\u1eddi ch\u01a1i ch\u1ec9 c\u1ea7n \u0111o\u00e1n \u0111\u00fang v\u1ec1 \u0111\u1ea7u ho\u1eb7c \u0111u\u00f4i. Ch\u00fang ta kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u00fang c\u1ea3 c\u1eb7p nh\u00e9.<\/p>\n
2. C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 \u0111\u1ea7u \u0111u\u00f4i trong s\u1ed1 \u0111\u1ec1<\/h2>\n
C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 \u0111\u1ea7u \u0111u\u00f4i trong s\u1ed1 \u0111\u1ec1 \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi ch\u01a1i ph\u1ea3i x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111\u1ea7u \u0111\u1ec1 v\u00e0 \u0111u\u00f4i \u0111\u1ec1 c\u1ee7a m\u1ed7i ng\u00e0y l\u00e0 bao nhi\u00eau. M\u1ed9t l\u01b0u \u00fd nho nh\u1ecf, ng\u01b0\u1eddi ch\u01a1i ch\u1ec9 c\u1ea7n \u0111o\u00e1n \u0111\u00fang v\u1ec1 \u0111\u1ea7u ho\u1eb7c \u0111u\u00f4i, kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111o\u00e1n tr\u00fang c\u1ea3 c\u1eb7p \u0111\u00e2u nh\u00e9. V\u1edbi c\u00e1ch n\u00e0y v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n l\u1ea1i d\u1ec5 tr\u00fang th\u01b0\u1edfng, \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n, b\u1ea1n \u0111\u1ecdc c\u00f9ng xem v\u00ed d\u1ee5 nh\u00e9:<\/p>\n
K\u1ebft qu\u1ea3 l\u00f4 \u0111\u1ec1 h\u00f4m nay l\u00e0 AAACD, CD s\u1ebd l\u00e0 s\u1ed1 \u0111\u1ec1. V\u1edbi ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, ng\u01b0\u1eddi ch\u01a1i c\u1ea7n x\u00e1c \u0111\u1ecbnh C v\u1ec1 \u0111\u1ea7u ho\u1eb7c D ph\u1ea3i v\u1ec1 cu\u1ed1i. Ch\u1ec9 c\u1ea7n \u0111o\u00e1n tr\u00fang m\u1ed9t trong hai tr\u01b0\u1eddng h\u1ee3p l\u00e0 \u0111\u00e3 tr\u00fang l\u00f4 \u0111\u1ec1 r\u1ed3i.<\/p>\n
3. C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 hay nh\u1ea5t d\u1ec5 tr\u00fang \u0111\u1ea7u \u0111u\u00f4i<\/h2>\n
V\u1ec1 c\u01a1 b\u1ea3n th\u00ec hi\u1ec7n nay ch\u00fang ta m\u1edbi ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u00e1nh \u0111\u1ec1 d\u1ec5 tr\u00fang nh\u1ea5t \u0111\u1ed1i v\u1edbi \u0111\u1ea7u \u0111u\u00f4i s\u1ed1 \u0111\u1ec1, \u00e1p d\u1ee5ng v\u1edbi t\u1eebng tr\u01b0\u1eddng h\u1ee3p tr\u00ean nh\u01b0 sau:<\/p>\n
<\/p>\n
a. C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 hay \u0103n \u0111\u1ea7u \u0111u\u00f4i s\u1ed1 \u0111\u1ec1<\/h4>\n
– V\u1ec1 c\u01a1 b\u1ea3n th\u00ec \u0111\u1ea7u \u0111\u00edt s\u1ed1 \u0111\u1ec1 ch\u1ec9 trong t\u1eadp h\u1ee3p 10 s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb bao g\u1ed3m: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, nh\u01b0 v\u1eady t\u1ef7 l\u1ec7 \u0103n c\u1ee7a ta s\u1ebd l\u00e0 1\/10, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 10% cho ri\u00eang \u0111\u1ea7u ho\u1eb7c ri\u00eang \u0111u\u00f4i \u0111\u1ec1.<\/p>\n
– Nh\u01b0 v\u1eady ta s\u1eed d\u1ee5ng t\u1ed5ng gi\u1ea3i \u0111\u1eb7c bi\u1ec7t ng\u00e0y h\u00f4m tr\u01b0\u1edbc \u0111\u1ec3 t\u00ednh \u0111\u1ea7u \u0111\u00edt \u0111\u1ec1 c\u1ee7a ng\u00e0y h\u00f4m nay.<\/p>\n
VD: Ng\u00e0y 14\/7\/2024 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 79866, t\u1ed5ng l\u00e0 36 = 9 nh\u01b0 v\u1eady ta c\u00f3 c\u00e1c ch\u1ea1m \u0111\u1ea7u l\u00e0 9, 8, 7, 6, 5, 4, 3, 2, 1. \u0110u\u00f4i ng\u01b0\u1ee3c l\u1ea1i<\/p>\n
Ng\u00e0y 15\/7\/2024 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 08181, \u0111\u1ea7u 8, \u0111\u00edt 1.<\/p>\n
T\u1ed5ng \u0111\u1ec1 ng\u00e0y n\u00e0y l\u00e0 16 = 7, ta c\u00f3 c\u00e1c ch\u1ea1m \u0111\u1ea7u l\u00e0 7, 6, 5, 4, 3, 2, 1.<\/p>\n
Ng\u00e0y 16\/7 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 l\u00e0 31039, \u0111\u1ea7u \u0111\u1ec1 3 v\u1ec1.<\/p>\n
b. C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 hay nh\u1ea5t \u0103n \u0111\u1ea7u \u0111u\u00f4i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t<\/h4>\n
C\u00e1ch \u0111\u00e1nh \u0111\u1ea7u \u0111u\u00f4i trong s\u1ed1 \u0111\u1ec1 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 c\u01a1 b\u1ea3n th\u00ec \u0111u\u00f4i s\u1ebd d\u1ec5 t\u00ednh, \u0111\u1ea7u \u0111\u1ec1 th\u00ec kh\u00f3 x\u00e1c \u0111\u1ecbnh.<\/p>\n
– N\u1ebfu th\u1ea5y \u0111\u1ea7u \u0111\u1ec1 v\u1ec1 k\u00e9p ho\u1eb7c 2 s\u1ed1 gi\u1eefa c\u00f3 k\u00e9p th\u00ec nh\u01b0 v\u1eady \u0111u\u00f4i c\u00f3 d\u1ea5u hi\u1ec7u v\u1ec1 k\u00e9p trong nh\u1eefng ng\u00e0y ti\u1ebfp theo.<\/p>\n
VD: Ng\u00e0y 10\/7\/2024 gi\u1ea3i \u0111\u1eb7c bi\u1ec7t v\u1ec1 32247, ng\u00e0y 14\/7 \u0111\u1ec1 \u0111u\u00f4i v\u1ec1 k\u00e9p 66.<\/p>\n
– N\u1ebfu b\u1ea1n th\u1ea5y \u0111u\u00f4i gi\u1ea3i 7.1 v\u1edbi \u0111\u1ea7u c\u1ee7a gi\u1ea3i 7.4 tru\u0300ng nhau thi\u0300 c\u00f3 th\u1ec3 \u0111\u00e1nh k\u00e9p \u0111\u1ec1 nh\u1eefng ng\u00e0y ti\u1ebfp theo.<\/p>\n
– \u0110\u00f4i khi n\u1ebfu th\u1ea5y \u0111u\u00f4i l\u00f4 c\u00e2m r\u1ed3i xu\u1ea5t hi\u1ec7n \u0111\u1ea7u c\u00e2m th\u00ec c\u00f3 th\u1ec3 \u0111\u1ec1 v\u1ec1 k\u00e9p, tr\u01b0\u1eddng h\u1ee3p n\u00e0y c\u00f2n c\u00f3 m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh, th\u01b0\u1eddng th\u00ec ch\u1ec9 v\u1ec1 l\u00f4 k\u00e9p.<\/p>\n
C\u00e1ch \u0111\u00e1nh \u0111\u1ec1 \u0111\u1ea7u \u0111u\u00f4i d\u1ec5 tr\u00fang, hay \u0103n nh\u1ea5t hi\u1ec7n nay tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 tham kh\u1ea3o d\u00e0nh cho ng\u01b0\u1eddi ch\u01a1i \u0111\u00e1nh \u0111\u1ea7u \u0111u\u00f4i l\u00f4 \u0111\u1ec1. T\u00f9y theo ph\u01b0\u01a1ng ph\u00e1p ho\u1eb7c l\u1ef1a ch\u1ecdn c\u00e1ch ch\u01a1i, b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 m\u00ecnh t\u00ecm cho b\u1ea3n th\u00e2n c\u00e1ch \u0111\u00e1nh hi\u1ec7u qu\u1ea3 nh\u1ea5t.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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