To\u00e0n t\u1eadp v\u1ec1 l\u00f4 \u0111\u1ec1 4 c\u00e0ng<\/strong>, c\u00e1ch \u0111\u00e1nh c\u0169ng nh\u01b0 t\u1ef7 l\u1ec7 \u0103n th\u01b0\u1edfng c\u1ee7a m\u1ed7i h\u00ecnh th\u1ee9c s\u1ebd \u0111\u01b0\u1ee3c t\u00f4i t\u1ed5ng h\u1ee3p v\u00e0 gi\u1edbi thi\u1ec7u \u0111\u1ebfn anh em m\u1ed9t c\u00e1ch chuy\u00ean s\u00e2u nh\u1ea5t trong ph\u1ea1m vi b\u00e0i vi\u1ebft n\u00e0y.<\/p>\n V\u1edbi thu\u1eadt ng\u1eef n\u00e0y, anh em c\u1ea7n hi\u1ec3u r\u00f5 v\u1ec1 2 h\u00ecnh th\u1ee9c ch\u01a1i \u0111\u00f3 ch\u00ednh l\u00e0 l\u00f4 4 c\u00e0ng<\/strong> v\u00e0 \u0111\u1ec1 4 c\u00e0ng<\/strong>. T\u00f4i s\u1ebd ph\u00e2n chia v\u00e0 gi\u1edbi thi\u1ec7u \u0111\u1ebfn anh em m\u1ed9t c\u00e1ch c\u1ee5 th\u1ec3 nh\u1ea5t \u0111\u1ec3 tr\u00e1nh b\u1ecb nh\u1ea7m l\u1eabn.<\/p>\n \u0110\u1ec1 4 c\u00e0ng<\/strong> l\u00e0 h\u00ecnh th\u1ee9c ch\u01a1i \u0111\u1ec1 m\u00e0 anh em c\u1ea7n l\u1ef1a ch\u1ecdn m\u1ed9t con s\u1ed1 g\u1ed3m 4 s\u1ed1 t\u1eeb 0000 \u2013 9999, ng\u01b0\u1eddi chi\u1ebfn th\u1eafng l\u00e0 ng\u01b0\u1eddi c\u1ea7n d\u1ef1 \u0111o\u00e1n \u0111\u00fang \u0111\u01b0\u1ee3c 4 con s\u1ed1 cu\u1ed1i c\u00f9ng c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t.<\/p>\n V\u00ed d\u1ee5: Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t Mi\u1ec1n B\u1eafc: 45012 \u2013 5012 l\u00e0 4 c\u00e0ng Mi\u1ec1n B\u1eafc.<\/p>\nPh\u00e2n lo\u1ea1i 4 c\u00e0ng<\/span><\/h2>\n
\u0110\u1ec1 4 c\u00e0ng l\u00e0 g\u00ec?<\/span><\/h3>\n