T\u01b0\u01a1ng t\u1ef1 v\u1edbi c\u1eb7p s\u1ed1 74 th\u00ec c\u00f3 t\u1ed5ng hai ch\u1eef s\u1ed1 l\u00e0 11 (7+4) kh\u00f4ng chia h\u1ebft cho 2 v\u00e0 c\u00f3 ch\u1ee9a s\u1ed1 l\u1ebb h\u00e0ng ch\u1ee5c l\u00e0 7, s\u1ed1 ch\u1eb5n h\u00e0ng \u0111\u01a1n v\u1ecb l\u00e0 4.<\/li>\n<\/ul>\nQua kh\u00e1i ni\u1ec7m tr\u00ean ch\u00fang ta s\u1ebd l\u1eadp \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 l\u00e0 50 c\u1eb7p s\u1ed1 sau: 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, 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.<\/p>\n
\u0110\u1ed1i v\u1edbi d\u00e0n \u0111\u1ec1 n\u00e0y th\u00ec bao g\u1ed3m 2 b\u1ed9 ph\u1eadn c\u1ea5u th\u00e0nh n\u00ean ch\u00fang; \u0111\u00f3 l\u00e0 d\u00e0n \u0111\u1ec1 l\u1ebb ch\u1eb5n v\u00e0 d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb. Tho\u1ea1t \u0111\u1ea7u nh\u00ecn kh\u00e1 gi\u1ed1ng nhau nh\u01b0ng \u0111\u00f3 l\u00e0 2 d\u00e0n \u0111\u1ec1 \u0111\u1ed1i ngh\u1ecbch v\u00e0 tr\u00e1i ng\u01b0\u1ee3c.<\/p>\n
D\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb<\/strong><\/span><\/h3>\n\u0110\u00e2y l\u00e0 d\u00e0n \u0111\u1ec1 ch\u1ee9a 25 c\u1eb7p s\u1ed1 m\u00e0 trong c\u1eb7p s\u1ed1 \u0111\u00f3 h\u00e0ng ch\u1ee5c (s\u1ed1 \u0111\u1ee9ng \u0111\u1ea7u) ph\u1ea3i lu\u00f4n l\u00e0 s\u1ed1 ch\u1eb5n; h\u00e0ng \u0111\u01a1n v\u1ecb ( s\u1ed1 \u0111\u1ee9ng sau ) ph\u1ea3i lu\u00f4n l\u00e0 s\u1ed1 l\u1ebb.<\/p>\n
Ta c\u00f3 th\u1ec3 l\u1eadp \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb sau: 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.<\/p>\n
D\u00e0n \u0111\u1ec1 l\u1ebb ch\u1eb5n<\/strong><\/span><\/h3>\nD\u00e0n \u0111\u1ec1 n\u00e0y \u0111\u1ed1i l\u1eadp v\u1edbi d\u00e0n \u0111\u1ec1 ch\u1eb5n l\u1ebb; c\u00f3 ngh\u0129a l\u00e0 trong c\u1eb7p s\u1ed1 \u0111\u00f3: s\u1ed1 h\u00e0ng ch\u1ee5c (s\u1ed1 \u0111\u1ee9ng \u0111\u1ea7u) ph\u1ea3i lu\u00f4n l\u00e0 s\u1ed1 l\u1ebb; h\u00e0ng \u0111\u01a1n v\u1ecb (s\u1ed1 \u0111\u1ee9ng sau ) ph\u1ea3i lu\u00f4n l\u00e0 s\u1ed1 ch\u1eb5n.<\/p>\n
Ta c\u00f3 th\u1ec3 l\u1eadp \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 l\u1ebb ch\u1eb5n sau: 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.<\/p>\n
M\u1ed7i lo\u1ea1i d\u00e0n \u0111\u1ec1 c\u00f3 m\u1ed9t hi\u1ec7u qu\u1ea3 ri\u00eang c\u1ee7a n\u00f3; khi anh em \u0111\u00e3 n\u1eafm v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1c kh\u00e1i ni\u1ec7m tr\u00ean th\u00ec vi\u1ec7c soi c\u1ea7u l\u00f4 \u0111\u1ec1 qua ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1ebd d\u1ec5 d\u00e0ng h\u01a1n r\u1ea5t nhi\u1ec1u. Khi \u0111\u00f3 c\u00e1c m\u1eb9o v\u00e0 b\u00ed quy\u1ebft c\u1ee7a h\u00ecnh th\u1ee9c ch\u01a1i n\u00e0y l\u00e0 trong t\u1ea7m tay c\u1ee7a c\u00e1c b\u1ea1n<\/p>\n
B\u00ed k\u00edp soi d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb ch\u1eafc tr\u00fang<\/b><\/span><\/h2>\n\u0110\u1ec3 n\u00e2ng cao kh\u1ea3 n\u0103ng chi\u1ebfn th\u1eafng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, \u0111\u1ea7u ti\u00ean c\u00e1c anh em ph\u1ea3i bi\u1ebft \u0111\u01b0\u1ee3c \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a n\u00f3 qua \u0111\u00f3 kh\u1eafc ph\u1ee5c c\u00e1c h\u1ea1n ch\u1ebf mang l\u1ea1i v\u00e0 ph\u00e1t huy c\u00e1c l\u1ee3i th\u1ebf c\u1ee7a vi\u1ec7c l\u1eadp d\u00e0n \u0111\u1ec1 n\u00e0y.<\/p>\n
\u01afu \u0111i\u1ec3m<\/b><\/span><\/h3>\n\n- \u0110\u01a1n gi\u1ea3n, d\u1ec5 hi\u1ec3u, d\u1ec5 \u00e1p d\u1ee5ng cho ng\u01b0\u1eddi m\u1edbi ch\u01a1i.<\/li>\n
- X\u00e1c su\u1ea5t tr\u00fang l\u00f4 \u0111\u1ec1 b\u1ea1ch th\u1ee7 cao, c\u0169ng c\u00f3 th\u1ec3 tr\u00fang l\u00f4 nhi\u1ec1u nh\u00e1y trong ng\u00e0y.<\/li>\n
- R\u1ea5t hi\u1ec7u qu\u1ea3 khi ch\u01a1i l\u00f4 xi\u00ean v\u00e0 t\u1ef7 l\u1ec7 th\u1eafng l\u00f4 xi\u00ean 2, xi\u00ean 3 th\u1eadm ch\u00ed xi\u00ean 4 l\u00e0 kh\u00e1 l\u1edbn.<\/li>\n
- Kh\u00f4ng t\u1ed1n qu\u00e1 nhi\u1ec1u th\u1eddi gian cho vi\u1ec7c soi c\u1ea7u v\u00ec vi\u1ec7c l\u1eadp d\u00e0n \u0111\u1ec1 l\u00e0 \u0111\u00e3 c\u00f3 s\u1eb5n.<\/li>\n<\/ul>\n
Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/b><\/span><\/h3>\n\n- Ph\u1ea3i b\u1ecf ra nhi\u1ec1u chi ph\u00ed khi ph\u1ea3i r\u1ea3i ti\u1ec1n \u0111\u1ec1u cho d\u00e0n \u0111\u1ec1.<\/li>\n
- Vi\u1ec7c t\u00ednh to\u00e1n c\u00e2n b\u1eb1ng t\u00fai ti\u1ec1n v\u00e0 chia ti\u1ec1n v\u00e0o c\u00e1c c\u1eb7p s\u1ed1 ph\u1ea3i h\u1ebft s\u1ee9c h\u1ee3p l\u00fd.<\/li>\n<\/ul>\n
M\u1ed9t s\u1ed1 m\u1eb9o v\u00e0 b\u00ed quy\u1ebft khi s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb<\/b><\/span><\/h2>\n![\"C\u00e1ch](\"\/wp-content\/uploads\/2024\/10\/cach-danh-lo-xien-de-trung-300x171.jpg\")
<\/p>\n
\n- Ph\u1ea3i ph\u1ed1i k\u1ebft h\u1ee3p h\u00ecnh th\u1ee9c ch\u01a1i n\u00e0y v\u1edbi nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p soi c\u1ea7u kh\u00e1c \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c l\u1eadp d\u00e0n \u0111\u1ec1<\/li>\n
- Theo d\u00f5i k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 h\u00e0ng ng\u00e0y \u0111\u1ec3 lo\u1ea1i tr\u1eeb nh\u1eefng con s\u1ed1 trong d\u00e0n \u0111\u1ec1 b\u1ecb tr\u00f9ng ho\u1eb7c c\u00f3 kh\u1ea3 n\u0103ng ra th\u1ea5p gi\u00fap ch\u00fang ta b\u1ecf qua n\u00f3.<\/li>\n
- N\u1eafm b\u1eaft \u0111\u01b0\u1ee3c t\u1ec9 l\u1ec7 ra c\u00e1c c\u1eb7p s\u1ed1 n\u1eb1m trong d\u00e0n \u0111\u1ec1 t\u1ed5ng ch\u1eb5n (d\u00e0n \u0111\u1ec1 \u0111\u1ed1i l\u1eadp v\u1edbi t\u1ed5ng l\u1ebb) nh\u1eb1m l\u00e0m t\u0103ng s\u1ef1 quy\u1ebft \u0111o\u00e1n khi b\u1ecf ti\u1ec1n v\u00e0o ch\u01a1i d\u00e0n \u0111\u1ec1 c\u1ee7a m\u00ecnh.<\/li>\n
- H\u1ecdc h\u1ecfi kinh nghi\u1ec7m t\u1eeb nh\u1eefng cao th\u1ee7 \u0111i tr\u01b0\u1edbc, ng\u01b0\u1eddi ch\u01a1i l\u00e2u n\u0103m trong b\u1ed9 m\u00f4n n\u00e0y \u0111\u1ec3 s\u00e0ng l\u1ecdc, l\u1ef1a ch\u1ecdn c\u00e1c c\u1eb7p s\u1ed1 l\u00f4 b\u1ea1ch th\u1ee7 \u0111\u1eb9p cho vi\u1ec7c l\u1eadp v\u00e0 nu\u00f4i d\u00e0n \u0111\u1ec1 \u0111\u00f3 .<\/li>\n
- Kh\u00f4ng qu\u00e1 v\u1ed9i v\u00e0ng trong vi\u1ec7c l\u1eadp d\u00e0n \u0111\u1ec1, lu\u00f4n lu\u00f4n tho\u1ea3i m\u00e1i v\u1ec1 ti\u1ec1n b\u1ea1c c\u0169ng nh\u01b0 th\u1eddi gian. Ch\u1eadm r\u00e3i soi x\u00e9t k\u1ef9 l\u01b0\u1ee1ng t\u1eebng c\u1eb7p s\u1ed1 m\u00ecnh th\u00edch, \u0111\u1ed1i chi\u1ec1u v\u1edbi c\u00e1c c\u1eb7p s\u1ed1 c\u00f3 s\u1eb5n trong d\u00e0n gi\u00fap n\u00e2ng cao t\u1ef7 l\u1ec7 chi\u1ebfn th\u1eafng.<\/li>\n<\/ol>\n
T\u1ea1m k\u1ebft<\/b><\/span><\/h2>\nTh\u00f4ng qua n\u1ed9i dung c\u1ee5 th\u1ec3 c\u1ee7a b\u00e0i vi\u1ebft tr\u00ean, ch\u00fang t\u00f4i mong r\u1eb1ng m\u1ed9t ph\u1ea7n n\u00e0o \u0111\u00f3 \u0111\u00e3 gi\u00fap anh em trong vi\u1ec7c soi c\u1ea7u l\u00f4 \u0111\u1ec1 h\u1eb1ng ng\u00e0y.Bi\u1ebft \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng ph\u00e1p c\u0169ng nh\u01b0 c\u00e1c th\u1ee7 thu\u1eadt, b\u00ed quy\u1ebft c\u1ee7a vi\u1ec7c l\u1eadp d\u00e0n \u0111\u1ec1 t\u1ed5ng l\u1ebb<\/b> mang l\u1ea1i hi\u1ec7u qu\u1ea3 cao nh\u1ea5t cho vi\u1ec7c lu\u1eadn c\u1ea7u n\u00f3i chung v\u00e0 l\u1eadp d\u00e0n \u0111\u1ec1 n\u00f3i ri\u00eang. Ch\u00fac to\u00e0n th\u1ec3 anh em m\u00e3 \u0111\u00e1o th\u00e0nh c\u00f4ng trong b\u1ed9 m\u00f4n n\u00e0y.<\/p>\n