L\u00f4 \u0110\u1ec1 l\u00e0 g\u00ec ? T\u00ecm hi\u1ec3u v\u1ec1 l\u00f4 \u0111\u1ec1 cho ng\u01b0\u1eddi m\u1edbi ch\u01a1i<\/figcaption><\/figure>\n\u0110\u1ec1 l\u00e0 g\u00ec?<\/h3>\n
\u0110\u1ec1 l\u00e0 2 con s\u1ed1 cu\u1ed1i c\u00f9ng c\u1ee7a gi\u1ea3i \u0110\u1eb7c bi\u1ec7t. V\u00ec gi\u1ea3i n\u00e0y ch\u1ec9 c\u00f3 m\u1ed9t n\u00ean m\u1ed7i ng\u00e0y m\u1ed7i \u0111\u00e0i s\u1ebd c\u00f3 c\u00f3 1 con \u0111\u1ec1 duy nh\u1ea5t. Ngo\u00e0i ra c\u00f2n c\u00f3 \u0111\u1ec1 3 c\u00e0ng<\/strong>, \u0111\u1ec1 4 c\u00e0ng<\/strong>: n\u1ebfu \u0111\u1ec1 3 c\u00e0ng th\u00ec d\u00f2 3 s\u1ed1 cu\u1ed1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t, \u0111\u1ec1 4 c\u00e0ng l\u00e0 d\u00f2 4 s\u1ed1 cu\u1ed1i gi\u1ea3i \u0111\u1eb7c bi\u1ec7t.<\/p>\nV\u00ed D\u1ee5:<\/strong> theo k\u1ebft qu\u1ea3 c\u1ee7a \u0111\u00e0i mi\u1ec1n b\u1eafc \u0111\u1ec1 v\u1ec1 con 90<\/strong>.<\/p>\nL\u00f4 \u0110\u1ec1 l\u00e0 g\u00ec ? T\u00ecm hi\u1ec3u v\u1ec1 l\u00f4 \u0111\u1ec1 cho ng\u01b0\u1eddi m\u1edbi ch\u01a1i<\/h4>\n
\u0110\u00e1nh \u0111\u1ec1 c\u0169ng t\u01b0\u01a1ng t\u1ef1 v\u1edbi \u0111\u00e1nh l\u00f4. B\u1ea1n s\u1ebd ph\u1ea3i d\u1ef1 \u0111o\u00e1n xem ng\u00e0y h\u00f4m \u0111\u00f3 2 s\u1ed1 cu\u1ed1i c\u1ee7a gi\u1ea3i \u0111\u1eb7c bi\u1ec7t s\u1ebd v\u1ec1 con n\u00e0o. Tuy nhi\u00ean ch\u00fat kh\u00e1c bi\u1ec7t v\u1edbi l\u00f4, v\u00ec \u0111\u1ec1 ch\u1ec9 c\u00f3 m\u1ed9t con n\u00ean kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng \u0103n nhi\u1ec1u nh\u00e1y nh\u01b0 l\u00f4. \u01afu \u0111i\u1ec3m c\u1ee7a \u0111\u00e1nh \u0111\u1ec1 \u0111\u00f3 l\u00e0 ti\u1ec1n v\u1ed1n b\u1ea1n ph\u1ea3i b\u1ecf ra s\u1ebd \u00edt h\u01a1n khi \u0111\u00e1nh l\u00f4. Nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 \u0111o\u00e1n \u0111\u1ec1 l\u1ea1i kh\u00f3 h\u01a1n \u0111o\u00e1n l\u00f4 r\u1ea5t nhi\u1ec1u.<\/p>\n
L\u00f4 l\u00e0 g\u00ec?<\/h3>\n
L\u00f4 l\u00e0 2 s\u1ed1 cu\u1ed1i c\u1ee7a d\u00e3y x\u1ed5 s\u1ed1, trong x\u1ed5 s\u1ed1 mi\u1ec1n B\u1eafc s\u1ebd c\u00f3 27 con l\u00f4 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi 27 gi\u1ea3i x\u1ed5 s\u1ed1. \u0110\u00e0i mi\u1ec1n Nam v\u00e0 mi\u1ec1n Trung s\u1ebd c\u00f3 18 con l\u00f4. Ngo\u00e0i ra c\u00f3 l\u00f4 3 c\u00e0ng<\/strong>, l\u00f4 4 c\u00e0ng<\/strong> v\u00e0 l\u00f4 xi\u00ean<\/strong>.<\/p>\n\u0110\u00e1nh l\u00f4 t\u1ee9c l\u00e0 c\u00e1c b\u1ea1n ph\u1ea3i d\u1ef1 \u0111o\u00e1n xem ng\u00e0y h\u00f4m \u0111\u00f3 s\u1ebd c\u00f3 con l\u00f4 n\u00e0o. V\u00ed d\u1ee5 b\u1ea1n d\u1ef1 \u0111o\u00e1n trong s\u1ed1 27 gi\u1ea3i mi\u1ec1n b\u1eafc c\u00f3 con 03. Khi k\u1ebft qu\u1ea3 c\u1ee7a ng\u00e0y h\u00f4m \u0111\u00f3 trong s\u1ed1 27 gi\u1ea3i x\u1ed5 ra c\u00f3 m\u1ed9t gi\u1ea3i n\u0103m ra s\u1ed1 9103, gi\u1ea3i b\u1ea3y ra con 03. Nh\u01b0 v\u1eady b\u1ea1n \u0111\u00e3 tr\u00fang 2 nh\u00e1y con s\u1ed1 n\u00e0y.<\/p>\n
V\u1ec1 \u01afu \u0111i\u1ec3m c\u1ee7a \u0111\u00e1nh l\u00f4 \u0111\u00f3 l\u00e0 d\u1ec5 tr\u00fang h\u01a1n \u0111\u00e1nh \u0111\u1ec1. Tuy nhi\u00ean ch\u01a1i l\u00f4 th\u00ec b\u1ecf v\u1ed1n nhi\u1ec1u h\u01a1n. N\u1ebfu con s\u1ed1 b\u1ea1n d\u1ef1 \u0111o\u00e1n kh\u00f4ng v\u1ec1 nh\u00e1y n\u00e0o th\u00ec s\u1ed1 ti\u1ec1n m\u1ea5t \u0111\u01b0\u1ee3c s\u1ebd nhi\u1ec1u hay \u00edt d\u1ef1a v\u00e0o ti\u1ec1n v\u1ed1n b\u1ea1n b\u1ecf ra.<\/p>\n
L\u00f4 xi\u00ean \u2013 s\u1ed1 \u0111\u00e1 l\u00e0 g\u00ec?<\/h3>\n
<\/p>\n
\u0110\u00e1nh l\u00f4 xi\u00ean (mi\u00ean nam g\u1ecdi l\u00e0 S\u1ed1 \u0110\u00e1) t\u00f9y v\u00e0o v\u00f9ng mi\u1ec1n m\u00e0 c\u00f3 t\u00ean g\u1ecdi kh\u00e1c nhau nh\u01b0 v\u1eady. C\u00e1ch \u0111\u00e1nh L\u00f4 Xi\u00ean ngh\u0129a l\u00e0 \u0111\u00e1nh 2 con L\u00f4 c\u00f9ng 1 l\u00fac. N\u1ebfu nh\u01b0 trung k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 c\u00f3 2 con \u0111\u00e1nh th\u00ec tr\u00fang. N\u1ebfu ch\u1ec9 c\u00f3 1 con ho\u1eb7c kh\u00f4ng c\u00f3 con n\u00e0o th\u00ec thua.<\/p>\n
T\u1ea1i c\u00f3 \u0111\u00e1nh xi\u00ean 2 v\u00e0 xi\u00ean 3.<\/p>\n
V\u00ed d\u1ee5: nh\u01b0 h\u00ecnh<\/strong><\/h4>\n\u2013 \u0110\u00e1nh l\u00f4 xi\u00ean 2:<\/strong> \u0111\u00e1nh hai con 69 v\u00e0 12 . K\u1ebft qu\u1ea3 c\u00f3 hai con s\u1ed1 49169<\/strong> v\u00e0 76<\/strong> n\u00ean t\u00f4i tr\u00fang xi\u00ean 2.<\/p>\n\u2013 \u0110\u00e1nh l\u00f4 xi\u00ean 3<\/strong>: T\u00f4i \u0111\u00e1nh ba con 42, 07, 08. K\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 l\u00e0 05042, 4807<\/strong> v\u00e0 08<\/strong> n\u00ean t\u00f4i s\u1ebd tr\u00fang xi\u00ean 3.<\/p>\n