N\u1ebfu nh\u01b0 \u0111\u00e1nh l\u00f4 n\u00e0y c\u00f3 STL, xi\u00ean quay th\u00ec l\u00f4 tr\u01b0\u1ee3t c\u0169ng c\u00f3 xi\u00ean tr\u01b0\u1ee3t 6, 7, 8\u2026 \u0110\u00fang nh\u01b0 t\u00ean g\u1ecdi c\u1ee7a ch\u00fang th\u00ec m\u1ed7i h\u00ecnh th\u1ee9c ch\u01a1i t\u01b0\u01a1ng \u1ee9ng v\u1edbi s\u1ed1 l\u00f4 d\u1ef1 \u0111o\u00e1n kh\u00f4ng v\u1ec1.<\/p>\n
T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m n\u00e0y th\u00ec c\u00f3 c\u00e1c c\u00e1ch \u0111\u00e1nh xi\u00ean tr\u01b0\u1ee3t c\u01a1 b\u1ea3n l\u00e0: tr\u01b0\u1ee3t 6, 7, 8, 9, 10 con l\u00f4. V\u00e0 t\u00f9y v\u00e0o s\u1ed1 l\u00f4 d\u1ef1 \u0111o\u00e1n m\u00e0 nh\u00e0 c\u00e1i s\u1ebd \u0111\u01b0a ra c\u00e1c m\u1ee9c ph\u00ed v\u00e0 t\u1ef7 l\u1ec7 tr\u1ea3 th\u01b0\u1edfng kh\u00e1c nhau.<\/p>\n
\u0110\u1eebng v\u1ed9i th\u1eafc m\u1eafc \u0111\u00e1nh l\u00f4 tr\u01b0\u1ee3t h\u1ebft bao nhi\u00eau ti\u1ec1n v\u00e0 n\u1ebfu th\u1eafng s\u1ebd tr\u00fang bao nhi\u00eau. Ngay sau \u0111\u00e2y c\u00e1c chuy\u00ean gia x\u1ed5 s\u1ed1 s\u1ebd th\u1ecfa m\u00e3n nh\u1eefng b\u0103n kho\u0103n \u0111\u00f3.<\/p>\n
Xi\u00ean tr\u01b0\u1ee3t 4 con: D\u1ef1 \u0111o\u00e1n 4 con s\u1ed1 t\u1eeb 00 \u2013 99 kh\u00f4ng tr\u00f9ng v\u1edbi b\u1ea5t c\u1ee9 2 s\u1ed1 cu\u1ed1i n\u00e0o c\u1ee7a c\u00e1c gi\u1ea3i l\u00f4 v\u1eeba ra. T\u1ef7 l\u1ec7 \u0103n th\u01b0\u1eddng l\u00e0 1 \u0103n 2,5.<\/p>\n
N\u1ebfu ch\u1ecdn xi\u00ean tr\u01b0\u1ee3t 6 th\u00ec d\u1ef1 \u0111o\u00e1n 6 con s\u1ed1 s\u1ebd kh\u00f4ng v\u1ec1. M\u1ee9c th\u01b0\u1edfng nh\u1eadn \u0111\u01b0\u1ee3c l\u00e0 1 \u0103n 3.<\/p>\n
Ch\u01a1i xi\u00ean tr\u01b0\u1ee3t 7 ngh\u0129a l\u00e0 t\u00ednh to\u00e1n \u0111\u00fang 7 con s\u1ed1 l\u00f4 kh\u00f4ng v\u1ec1. K\u1ebft qu\u1ea3 n\u1ebfu d\u1ef1 \u0111o\u00e1n \u0111\u00fang th\u00ec s\u1ebd nh\u1eadn th\u01b0\u1edfng t\u1ef7 l\u1ec7 l\u00e0 1:6.<\/p>\n
D\u1ef1 \u0111o\u00e1n 8 con s\u1ed1 t\u1eeb 00 \u2013 99. C\u00e1c con s\u1ed1 n\u00e0y s\u1ebd kh\u00f4ng xu\u1ea5t hi\u1ec7n \u1edf b\u1ea5t c\u1ee9 gi\u1ea3i l\u00f4 n\u00e0o trong b\u1ea3ng KQXS. T\u1ef7 l\u1ec7 \u0103n l\u00e0 1:8.<\/p>\n
Ch\u01a1i xi\u00ean tr\u01b0\u1ee3t 9 l\u00e0 d\u1ef1 \u0111o\u00e1n 9 con s\u1ed1 kh\u00f4ng v\u1ec1 v\u00e0 n\u1ebfu \u0111\u00fang th\u00ec s\u1ebd nh\u1eadn th\u01b0\u1edfng theo m\u1ee9c 1:10.<\/p>\n
Xi\u00ean tr\u01b0\u1ee3t 10: \u0110\u00e2y s\u1ebd l\u00e0 10 con s\u1ed1 c\u0169ng \u0111\u01b0\u1ee3c ch\u1ecdn trong b\u1ea3ng t\u1eeb 00 \u2013 99. C\u0169ng nh\u01b0 c\u00e1c c\u00e1ch \u0111\u00e1nh tr\u00ean th\u00ec ch\u00fang s\u1ebd kh\u00f4ng xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c gi\u1ea3i l\u00f4 \u0111\u00e3 n\u1ed5. Tr\u1ea3 th\u01b0\u1edfng theo t\u1ef7 l\u1ec7 1:12.<\/p>\n
Nh\u01b0 v\u1eady th\u00ec d\u1ef1 \u0111o\u00e1n c\u00e0ng nhi\u1ec1u l\u00f4 kh\u00f4ng v\u1ec1 chu\u1ea9n x\u00e1c th\u00ec c\u00e0ng nh\u1eadn th\u01b0\u1edfng cao. V\u1edbi t\u1ef7 l\u1ec7 d\u1ef1 \u0111o\u00e1n tr\u00fang l\u1edbn th\u00ec kh\u00f4ng c\u00f3 g\u00ec l\u1ea1 khi \u0111\u00e1nh l\u00f4 tr\u01b0\u1ee3t l\u00e0 m\u1ed9t c\u00e1ch \u0111\u1ea7u t\u01b0 th\u00f4ng minh.<\/p>\n
L\u01b0u \u00fd: T\u1ef7 l\u1ec7 tr\u00ean ch\u1ec9 \u00e1p d\u1ee5ng v\u1edbi x\u1ed5 s\u1ed1 Mi\u1ec1n B\u1eafc. N\u1ebfu ch\u01a1i lo\u1ea1i Mi\u1ec1n Nam v\u00e0 Trung th\u00ec m\u1ee9c th\u01b0\u1edfng s\u1ebd th\u1ea5p h\u01a1n r\u1ea5t nhi\u1ec1u. C\u1ee5 th\u1ec3 l\u00e0 xi\u00ean tr\u01b0\u1ee3t 4 ch\u1ec9 \u0103n v\u1edbi m\u1ee9c 1:2; xi\u00ean tr\u01b0\u1ee3t 8 l\u00e0 3,5 v\u00e0 xi\u00ean tr\u01b0\u1ee3t 10 t\u1ef7 l\u1ec7 nh\u1eadn th\u01b0\u1edfng l\u00e0 1 \u0103n 5 n\u1ebfu tr\u00fang.<\/p>\n