Anh em ph\u1ea3i x\u00e1c \u0111\u1ecbnh t\u1eeb \u0111\u1ea7u l\u00e0 khi d\u1ea5n th\u00e2n v\u00e0o con \u0111\u01b0\u1eddng ch\u01a1i l\u00f4 \u0111\u1ec1 chuy\u00ean nghi\u1ec7p th\u00ec anh em n\u00ean trang b\u1ecb th\u1eadt t\u1ed1t ki\u1ebfn th\u1ee9c cho m\u00ecnh. D\u01b0\u1edbi \u0111\u00e2y ch\u00ednh l\u00e0 m\u1ed9t s\u1ed1 m\u00e1ch n\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 anh em n\u00e2ng cao k\u1ef9 n\u0103ng b\u1eaft s\u1ed1 cho b\u1ea3n th\u00e2n v\u00e0 n\u1eafm b\u1eaft \u0111\u01b0\u1ee3c nhi\u1ec1u c\u01a1 h\u1ed9i th\u00e0nh c\u00f4ng.<\/p>\n
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T\u1ed5ng l\u00f4 \u0111\u1ec1 l\u00e0 g\u00ec?<\/h2>\n
T\u1ed5ng \u0111\u1ec1<\/strong> ch\u00ednh l\u00e0 t\u1ed5ng c\u1ee7a 2 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t. D\u00f9 l\u00e0 x\u1ed5 s\u1ed1 Mi\u1ec1n B\u1eafc, Mi\u1ec1n Nam hay Mi\u1ec1n Trung th\u00ec kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u1ec1u c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh chung nh\u01b0 v\u1eady.<\/p>\n V\u00ed d\u1ee5<\/strong>: Gi\u1ea3i \u0111\u1eb7c bi\u1ec7t l\u00e0 87353 th\u00ec c\u00f4ng th\u1ee9c t\u00ednh l\u00e0 5 + 3 = 8 => T\u1ed5ng \u0110B l\u00e0 8.<\/p>\n