\u0110\u1ec1 ch\u1eb5n l\u1ebb l\u00e0 g\u00ec?<\/span><\/h2>\n\u0110\u1ec1 ch\u1eb5n l\u1ebb <\/strong>l\u00e0 c\u00e1ch ch\u01a1i l\u00f4 \u0111\u1ec1 m\u00e0 ng\u01b0\u1eddi ch\u01a1i c\u1ea7n ch\u1ecdn ra m\u1ed9t con s\u1ed1 g\u1ed3m 2 ch\u1eef s\u1ed1 c\u00f3 d\u1ea1ng l\u00e0 ch\u1eb5n ho\u1eb7c l\u1ebb \u0111\u1ec3 tham gia th\u1eed v\u1eadn may ng\u00e0y h\u00f4m nay v\u1edbi con s\u1ed1 ch\u1eb5n l\u00e0 0, 2, 4, 6, 8 ho\u1eb7c con s\u1ed1 l\u1ebb l\u00e0 1, 3, 5, 7, 9.<\/p>\nC\u00e1ch ch\u01a1i d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb<\/span><\/h2>\nCh\u1eb5n l\u1ebb th\u01b0\u1eddng \u0111\u01b0\u1ee3c anh em \u00e1p d\u1ee5ng \u0111\u1ec3 ch\u01a1i d\u00e0n \u0111\u1ec1 v\u1edbi c\u00e1c d\u1ea1ng nh\u01b0 sau.<\/p>\n
Th\u1ed1ng k\u00ea ch\u1eb5n l\u1ebb \u2013 c\u00e1c d\u1ea1ng c\u1ea7u ch\u1eb5n l\u1ebb c\u01a1 b\u1ea3n<\/span><\/h3>\nS\u1ed1 h\u1ecdc lu\u00f4n th\u00e2m b\u1ea5t kh\u1ea3 tr\u1eafc (th\u00e2m s\u00e2u kh\u00f3 l\u01b0\u1eddng), kh\u00f4ng h\u1ec1 d\u1ec5 d\u00e0ng n\u1ebfu kh\u00f4ng th\u1eadt s\u1ef1 chuy\u00ean t\u00e2m v\u00e0 nghi\u00eam t\u00fac v\u1edbi n\u00f3. \u0110\u1ec3 s\u1edbm ng\u1ed9 s\u1ed1 h\u1ecdc, anh em ph\u1ea3i c\u1eadp nh\u1eadt h\u1ebft t\u1ea5t c\u1ea3 ki\u1ebfn th\u1ee9c, kinh nghi\u1ec7m m\u00e0 c\u00e1c cao th\u1ee7 l\u00f4 \u0111\u1ec1 \u0111\u00e3 d\u00e0y c\u00f4ng truy\u1ec1n th\u1ee5.
\nAnh em h\u1eb3n \u0111\u1ec1u bi\u1ebft r\u00f5 s\u1ed1 ch\u1eb3n l\u00e0 s\u1ed1 chia h\u1ebft cho 2, c\u00f2n s\u1ed1 l\u1ebb th\u00ec kh\u00f4ng. Trong l\u00f4 \u0111\u1ec1 h\u1ecdc ta c\u00f3 d\u00e3y s\u1ed1 ch\u1eafn 0, 2, 4, 6, 8. C\u00f2n d\u00e3y s\u1ed1 l\u1ebb l\u00e0 1, 3, 5, 7, 9. Khi gh\u00e9p 2 con s\u1ed1 th\u00e0nh 1 con l\u00f4 \u0111\u1ec1 th\u00ec c\u00f3 4 lo\u1ea1i d\u1ea1ng c\u1ea7u nh\u01b0 sau:<\/p>\n
\n- Ch\u1eb5n \u2013 Ch\u1eb5n<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 00, 02, 04, 06, 08, 20, 22, 24, 26, 28, 40, 42, 44, 46, 48, 60, 62, 64, 66, 68, 80, 82, 84, 86, 88<\/li>\n
- Ch\u1eb5n \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 01, 03, 05, 07, 09, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89<\/li>\n
- L\u1ebb \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 11, 13, 15, 17, 19, 31, 33, 35, 37, 39, 51, 53, 55, 57, 59, 71, 73, 75, 77, 79, 91, 93, 95, 97, 99<\/li>\n
- L\u1ebb \u2013 Ch\u1eb5n<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 10, 12, 14, 16, 18, 30, 32, 34, 36, 38, 50, 52, 54, 56, 58, 70, 72, 74, 76, 78, 90, 92, 94, 96, 98<\/li>\n<\/ul>\n
C\u00e1ch ch\u01a1i d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb<\/span><\/h2>\nCh\u1eb5n l\u1ebb th\u01b0\u1eddng \u0111\u01b0\u1ee3c anh em \u00e1p d\u1ee5ng \u0111\u1ec3 ch\u01a1i d\u00e0n \u0111\u1ec1 v\u1edbi c\u00e1c d\u1ea1ng nh\u01b0 sau.<\/p>\n
Th\u1ed1ng k\u00ea ch\u1eb5n l\u1ebb \u2013 c\u00e1c d\u1ea1ng c\u1ea7u ch\u1eb5n l\u1ebb c\u01a1 b\u1ea3n<\/span><\/h3>\nS\u1ed1 h\u1ecdc lu\u00f4n th\u00e2m b\u1ea5t kh\u1ea3 tr\u1eafc (th\u00e2m s\u00e2u kh\u00f3 l\u01b0\u1eddng), kh\u00f4ng h\u1ec1 d\u1ec5 d\u00e0ng n\u1ebfu kh\u00f4ng th\u1eadt s\u1ef1 chuy\u00ean t\u00e2m v\u00e0 nghi\u00eam t\u00fac v\u1edbi n\u00f3. \u0110\u1ec3 s\u1edbm ng\u1ed9 s\u1ed1 h\u1ecdc, anh em ph\u1ea3i c\u1eadp nh\u1eadt h\u1ebft t\u1ea5t c\u1ea3 ki\u1ebfn th\u1ee9c, kinh nghi\u1ec7m m\u00e0 c\u00e1c cao th\u1ee7 l\u00f4 \u0111\u1ec1 \u0111\u00e3 d\u00e0y c\u00f4ng truy\u1ec1n th\u1ee5.
\nAnh em h\u1eb3n \u0111\u1ec1u bi\u1ebft r\u00f5 s\u1ed1 ch\u1eb3n l\u00e0 s\u1ed1 chia h\u1ebft cho 2, c\u00f2n s\u1ed1 l\u1ebb th\u00ec kh\u00f4ng. Trong l\u00f4 \u0111\u1ec1 h\u1ecdc ta c\u00f3 d\u00e3y s\u1ed1 ch\u1eafn 0, 2, 4, 6, 8. C\u00f2n d\u00e3y s\u1ed1 l\u1ebb l\u00e0 1, 3, 5, 7, 9. Khi gh\u00e9p 2 con s\u1ed1 th\u00e0nh 1 con l\u00f4 \u0111\u1ec1 th\u00ec c\u00f3 4 lo\u1ea1i d\u1ea1ng c\u1ea7u nh\u01b0 sau:<\/p>\n
\n- Ch\u1eb5n \u2013 Ch\u1eb5n<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 00, 02, 04, 06, 08, 20, 22, 24, 26, 28, 40, 42, 44, 46, 48, 60, 62, 64, 66, 68, 80, 82, 84, 86, 88<\/li>\n
- Ch\u1eb5n \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 01, 03, 05, 07, 09, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89<\/li>\n
- L\u1ebb \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 11, 13, 15, 17, 19, 31, 33, 35, 37, 39, 51, 53, 55, 57, 59, 71, 73, 75, 77, 79, 91, 93, 95, 97, 99<\/li>\n
- L\u1ebb \u2013 Ch\u1eb5n<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 10, 12, 14, 16, 18, 30, 32, 34, 36, 38, 50, 52, 54, 56, 58, 70, 72, 74, 76, 78, 90, 92, 94, 96, 98<\/li>\n<\/ul>\n
S\u1ed1 h\u1ecdc lu\u00f4n th\u00e2m b\u1ea5t kh\u1ea3 tr\u1eafc (th\u00e2m s\u00e2u kh\u00f3 l\u01b0\u1eddng), kh\u00f4ng h\u1ec1 d\u1ec5 d\u00e0ng n\u1ebfu kh\u00f4ng th\u1eadt s\u1ef1 chuy\u00ean t\u00e2m v\u00e0 nghi\u00eam t\u00fac v\u1edbi n\u00f3. \u0110\u1ec3 s\u1edbm ng\u1ed9 s\u1ed1 h\u1ecdc, anh em ph\u1ea3i c\u1eadp nh\u1eadt h\u1ebft t\u1ea5t c\u1ea3 ki\u1ebfn th\u1ee9c, kinh nghi\u1ec7m m\u00e0 c\u00e1c cao th\u1ee7 l\u00f4 \u0111\u1ec1 \u0111\u00e3 d\u00e0y c\u00f4ng truy\u1ec1n th\u1ee5.
\nAnh em h\u1eb3n \u0111\u1ec1u bi\u1ebft r\u00f5 s\u1ed1 ch\u1eb3n l\u00e0 s\u1ed1 chia h\u1ebft cho 2, c\u00f2n s\u1ed1 l\u1ebb th\u00ec kh\u00f4ng. Trong l\u00f4 \u0111\u1ec1 h\u1ecdc ta c\u00f3 d\u00e3y s\u1ed1 ch\u1eafn 0, 2, 4, 6, 8. C\u00f2n d\u00e3y s\u1ed1 l\u1ebb l\u00e0 1, 3, 5, 7, 9. Khi gh\u00e9p 2 con s\u1ed1 th\u00e0nh 1 con l\u00f4 \u0111\u1ec1 th\u00ec c\u00f3 4 lo\u1ea1i d\u1ea1ng c\u1ea7u nh\u01b0 sau:<\/p>\n
- \n
- Ch\u1eb5n \u2013 Ch\u1eb5n<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 00, 02, 04, 06, 08, 20, 22, 24, 26, 28, 40, 42, 44, 46, 48, 60, 62, 64, 66, 68, 80, 82, 84, 86, 88<\/li>\n
- Ch\u1eb5n \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 01, 03, 05, 07, 09, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89<\/li>\n
- L\u1ebb \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 11, 13, 15, 17, 19, 31, 33, 35, 37, 39, 51, 53, 55, 57, 59, 71, 73, 75, 77, 79, 91, 93, 95, 97, 99<\/li>\n
- L\u1ebb \u2013 Ch\u1eb5n<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 10, 12, 14, 16, 18, 30, 32, 34, 36, 38, 50, 52, 54, 56, 58, 70, 72, 74, 76, 78, 90, 92, 94, 96, 98<\/li>\n<\/ul>\n
- Ch\u1eb5n \u2013 L\u1ebb<\/strong>: G\u1ed3m c\u00e1c s\u1ed1 01, 03, 05, 07, 09, 21, 23, 25, 27, 29, 41, 43, 45, 47, 49, 61, 63, 65, 67, 69, 81, 83, 85, 87, 89<\/li>\n