X\u00ec d\u00e1ch 4 l\u00e1 x\u00ec t\u00ednh m\u1ea5y<\/figcaption><\/figure>\nTrong tr\u01b0\u1eddng h\u1ee3p b\u1ea1n s\u1edf h\u1eefu 2 l\u00e1 b\u00e0i A th\u00ec t\u1ed5ng \u0111i\u1ec3m cu\u1ed1i c\u00f9ng s\u1ebd l\u00e0 21. N\u00f3i c\u00e1ch kh\u00e1c, hai l\u00e1 b\u00e0i A \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh l\u00e0 x\u00ec b\u00e0n v\u00e0 chi\u1ebfn th\u1eafng s\u1ebd thu\u1ed9c v\u1ec1 b\u1ea1n ngay l\u1eadp t\u1ee9c. Tuy nhi\u00ean, n\u1ebfu s\u1edf h\u1eefu t\u1eeb 3 l\u00e1 b\u00e0i A tr\u1edf l\u00ean th\u00ec m\u1ed7i l\u00e1 b\u00e0i \u1edf \u0111\u00e2y s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi 1 \u0111i\u1ec3m duy nh\u1ea5t.<\/p>\n
N\u1ebfu b\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c chia 2 l\u00e1 b\u00e0i A v\u00e0 ti\u1ebfp t\u1ee5c ch\u1ecdn r\u00fat th\u00eam 2 l\u00e1 b\u00e0i A th\u00ec t\u1ed5ng 4 l\u00e1 b\u00e0i \u1edf \u0111\u00e2y s\u1ebd l\u00e0 4 \u0111i\u1ec3m. Vi\u1ec7c \u00e1p d\u1ee5ng \u0111i\u1ec3m s\u1ed1 11 s\u1ebd khi\u1ebfn t\u1ed5ng \u0111i\u1ec3m c\u1ee7a b\u1ea1n v\u01b0\u1ee3t qu\u00e1 21 v\u00e0 \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 thua cu\u1ed9c. V\u1eady n\u00ean, m\u1ed7i l\u00e1 A s\u1ebd \u0111\u01b0\u1ee3c g\u1eafn v\u1edbi 1 \u0111i\u1ec3m.<\/p>\n
C\u00e1ch ch\u01a1i X\u00ec d\u00e1ch l\u00e0 nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n
Sau khi \u0111\u00e3 hi\u1ec3u r\u00f5 v\u1ec1 gi\u00e1 tr\u1ecb c\u1ee7a t\u1eebng l\u00e1 b\u00e0i, c\u1ee5 th\u1ec3 l\u00e0 l\u00e1 b\u00e0i A th\u00ec b\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n sang \u0111\u1eb7t c\u01b0\u1ee3c ngay l\u1eadp t\u1ee9c. C\u00e1ch th\u1ee9c tham gia v\u00e0o c\u00e1c v\u00e1n b\u00e0i x\u00ec d\u00e1ch l\u00e0 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n v\u00e0 b\u1ea1n ch\u1ec9 c\u1ea7n l\u00e0m theo h\u01b0\u1edbng d\u1eabn sau \u0111\u00e2y:<\/p>\n