{"id":17864,"date":"2024-02-29T23:59:52","date_gmt":"2024-02-29T23:59:52","guid":{"rendered":"https:\/\/soicau5074.minhngocxoso.com\/?p=17864"},"modified":"2024-02-29T23:59:52","modified_gmt":"2024-02-29T23:59:52","slug":"so-de-4-cang-la-gi-cach-tinh-de-4-cang-nhu-the-nao","status":"publish","type":"post","link":"https:\/\/xs3mien.com\/so-de-4-cang-la-gi-cach-tinh-de-4-cang-nhu-the-nao\/","title":{"rendered":"S\u1ed1 \u0111\u1ec1 4 c\u00e0ng l\u00e0 g\u00ec? C\u00e1ch t\u00ednh \u0111\u1ec1 4 c\u00e0ng nh\u01b0 th\u1ebf n\u00e0o?"},"content":{"rendered":"
\u0110\u1ec1 4 c\u00e0ng l\u00e0 m\u1ed9t thu\u1eadt ng\u1eef chuy\u00ean nghi\u1ec7p d\u00e0nh cho d\u00e2n ch\u01a1i l\u00f4 \u0111\u1ec1 chuy\u00ean nghi\u1ec7p. Tuy nhi\u00ean, r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi m\u1edbi ch\u01a1i \u0111\u00e3 nh\u1ea7m l\u1eabn gi\u1eefa \u0111\u1ec1 4 c\u00e0ng l\u00e0 l\u00f4 4 c\u00e0ng. H\u00f4m nay, nh\u00e0 c\u00e1i c\u1ee7a ch\u00fang t\u00f4i s\u1ebd t\u1ed5ng h\u1ee3p t\u1ea5t c\u1ea3 m\u1ecdi th\u1ee9 v\u1ec1 s\u1ed1 \u0111\u1ec1 4 c\u00e0ng<\/strong> \u0111\u1ec3 anh em c\u00f9ng n\u1eafm r\u00f5 qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n <\/p>\n \u0110\u1ec1 4 c\u00e0ng l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a 4 s\u1ed1 cu\u1ed1i c\u00f9ng trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t c\u1ee7a x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc, Trung hay Nam. \u0110\u00e1nh \u0111\u1ec1 4 c\u00e0ng ch\u00ednh l\u00e0 khi b\u1ea1n d\u1ef1 \u0111o\u00e1n con s\u1ed1 trong d\u00e3y t\u1eeb 0000-9999. N\u1ebfu nh\u01b0 s\u1ed1 anh em ch\u1ecdn tr\u00f9ng v\u1edbi k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng c\u1ee7a G\u0110B trong b\u1ea3ng k\u1ebft qu\u1ea3 th\u00ec s\u1ebd gi\u00e0nh chi\u1ebfn th\u1eafng.<\/p>\n \u0110\u00e2y l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c ch\u01a1i c\u00f3 \u0111\u1ed9 kh\u00f3 c\u1ef1c k\u1ef3 cao. B\u1edfi n\u1ebfu nh\u01b0 \u0111\u00e1nh \u0111\u1ec1 truy\u1ec1n th\u1ed1ng th\u00ec t\u1ef7 l\u1ec7 th\u1eafng l\u00e0 1\/100. Nh\u01b0ng v\u1edbi lo\u1ea1i h\u00ecnh n\u00e0y th\u00ec x\u00e1c su\u1ea5t tr\u00fang s\u1ebd l\u00e0 1\/10000. M\u1eb7c d\u00f9 kh\u00f3 tr\u00fang nh\u01b0ng hi\u1ec7n nay v\u1eabn c\u00f3 r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c n\u00e0y b\u1edfi ti\u1ec1n th\u01b0\u1edfng l\u00e0 c\u1ef1c k\u1ef3 h\u1ea5p d\u1eabn.<\/p>\n Theo nh\u01b0 th\u1ed1ng k\u00ea th\u00ec t\u1ef7 l\u1ec7 tr\u00fang 4 c\u00e0ng ch\u1ec9 l\u00e0 0,1%, t\u1ee9c l\u00e0 1\/1000. M\u1eb7c d\u00f9 kh\u00f3 kh\u0103n nh\u01b0ng kh\u00f4ng ph\u1ea3i l\u00e0 kh\u00f4ng th\u1ec3 tr\u00fang. C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o m\u1ed9t s\u1ed1 c\u00e1ch b\u1eaft d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ec3 t\u0103ng x\u00e1c su\u1ea5t th\u1eafng c\u1ee7a m\u00ecnh.<\/p>\n C\u00e1ch b\u1eaft n\u00e0y \u0111\u01b0\u1ee3c ch\u00ednh c\u00e1c cao th\u1ee7 \u00e1p d\u1ee5ng v\u00e0 chia s\u1ebb, khi \u0111\u00f3 m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng theo c\u00f4ng th\u1ee9c sau: Th\u1ee9 + Ng\u00e0y + B\u1ea1ch th\u1ee7 l\u00f4 -> \u0110\u1ec1 4 c\u00e0ng.<\/p>\n V\u00ed d\u1ee5 nh\u01b0 h\u00f4m nay l\u00e0 th\u1ee9 2, ng\u00e0y 14, con b\u1ea1ch th\u1ee7 m\u00e0 b\u1ea1n soi \u0111\u01b0\u1ee3c l\u00e0 42. B\u1ea1n ti\u1ebfn h\u00e0nh gh\u00e9p c\u00e1c con s\u1ed1 n\u00e0y l\u1ea1i v\u1edbi nhau th\u00e0nh 21442. Con 4 c\u00e0ng m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 ch\u1ecdn l\u00e0 2144 v\u00e0 2142.<\/p>\n Ho\u1eb7c n\u1ebfu h\u00f4m nay l\u00e0 th\u1ee9 7 ng\u00e0y 4 v\u00e0 con b\u1ea1ch th\u1ee7 b\u1ea1n t\u00ednh \u0111\u01b0\u1ee3c l\u00e0 30. Khi ti\u1ebfn h\u00e0nh gh\u00e9p c\u00e1c con s\u1ed1 l\u1ea1i v\u1edbi nhau ta s\u1ebd c\u00f3 d\u00e3y 7430 v\u00e0 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u00e1nh th\u00eam con 4 c\u00e0ng 7431, 7432.<\/p>\n C\u00e1ch b\u1eaft l\u00f4 \u0111\u1ec1 n\u00e0y kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u00e0 c\u00e1ch t\u00ednh c\u0169ng r\u1ea5t \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi \u00e1p d\u1ee5ng. Theo \u0111\u00f3 ng\u00e0y ch\u1eb5n s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi 2 v\u00e0 ng\u00e0y l\u1ebb s\u1ebd \u0111\u01b0\u1ee3c quy \u01b0\u1edbc l\u00e0 1. C\u00f4ng th\u1ee9c t\u00ednh nh\u01b0 sau: T\u1ed5ng ng\u00e0y v\u00e0 th\u00e1ng – ng\u00e0y ch\u1eb5n\/ l\u1ebb + b\u1ea1ch th\u1ee7 l\u00f4.<\/p>\n<\/span>S\u1ed1 \u0111\u1ec1 4 c\u00e0ng l\u00e0 g\u00ec?<\/h2>\n
<\/span>C\u00e1ch b\u1eaft s\u1ed1 \u0111\u1ec1 4 c\u00e0ng chu\u1ea9n x\u00e1c nh\u1ea5t<\/h2>\n
<\/span>Ch\u01a1i \u0111\u1ec1 4 c\u00e0ng d\u1ef1a v\u00e0o c\u00e1c th\u1ee9 trong ng\u00e0y<\/h3>\n
<\/span>Ph\u01b0\u01a1ng ph\u00e1p b\u1eaft l\u00f4 \u0111\u1ec1 4 c\u00e0ng d\u1ef1a v\u00e0o ng\u00e0y ch\u1eb5n l\u1ebb<\/h3>\n