Xi\u00ean 2, 3, 4<\/b> ch\u1eafc kh\u00f4ng c\u00f2n xa l\u1ea1 v\u1edbi nh\u1eefng ai y\u00eau th\u00edch l\u00f4 \u0111\u1ec1 v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng ng\u01b0\u1eddi ch\u01a1i \u0111\u00f4ng \u0111\u1ea3o hi\u1ec7n nay ch\u1ec9 sau ch\u01a1i l\u00f4 b\u00ecnh th\u01b0\u1eddng v\u00e0 ch\u01a1i \u0111\u1ec1. L\u00f4 xi\u00ean \u0111\u01b0\u1ee3c g\u1ecdi t\u1eaft l\u00e0 xi\u00ean, lo\u1ea1i h\u00ecnh tr\u00f2 ch\u01a1i may r\u1ee7i thu h\u00fat \u0111\u00f4ng \u0111\u1ea3o ng\u01b0\u1eddi ch\u01a1i b\u1edfi n\u00f3 ph\u1ea3i b\u1ecf ra t\u01b0\u01a1ng \u0111\u1ed1i \u00edt v\u1ed1n v\u00e0 th\u1eafng nh\u1eadn l\u1ea1i th\u01b0\u1edfng l\u1edbn.\u00a0<\/span><\/p>\n Nh\u1eefng ai b\u1ecb thu h\u00fat b\u1edfi tr\u00f2 ch\u01a1i h\u1ea5p d\u1eabn n\u00e0y n\u00ean t\u00ecm hi\u1ec3u <\/span>xi\u00ean 2, 3, 4<\/b> l\u00e0 g\u00ec \u0111\u1ec3 hi\u1ec3u h\u01a1n v\u1ec1 lo\u1ea1i h\u00ecnh tr\u00f2 ch\u01a1i \u0111\u00f3. Ph\u1ea7n d\u01b0\u1edbi \u0111\u00e2y s\u1ebd cho b\u1ea1n hi\u1ec3u h\u01a1n v\u1ec1 lo\u1ea1i h\u00ecnh n\u00e0y chi ti\u1ebft nh\u1ea5t.<\/span><\/p>\n Xi\u00ean 2 (xi\u00ean \u0111\u00f4i)<\/i><\/b> \u2013 b\u1ea1n s\u1ebd ph\u1ea3i ch\u1ecdn ra 2 con l\u00f4 ho\u00e0n to\u00e0n kh\u00e1c nhau, kh\u00f4ng gi\u1ed1ng nhau \u0111\u1ec3 th\u00e0nh c\u1eb7p l\u00f4 v\u00e0 c\u01b0\u1ee3c. N\u1ebfu nh\u01b0 2 con l\u00f4 n\u00e0y c\u00f9ng v\u1ec1 trong m\u1ed9t ng\u00e0y quay th\u01b0\u1edfng x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc th\u00ec b\u1ea1n s\u1ebd tr\u00fang th\u01b0\u1edfng.<\/span><\/p>\n V\u00ed d\u1ee5:<\/p>\n <\/span><\/p>\n \u1ede h\u00ecnh tr\u00ean n\u1ebfu b\u1ea1n \u0111\u00e1nh 59, 63 (\u00f4 m\u00e0u \u0111\u1ecf) th\u00ec \u0103n xi\u00ean 2, n\u00eau b\u1ea1n \u0111\u00e1nh 22 v\u00e0 34 th\u00ec b\u1ea1n v\u1eabn s\u1ebd \u0103n xi\u00ean 2 tuy l\u00e0 34 v\u1ec1 2 l\u1ea7n (l\u00fac n\u00e0y b\u1ea1n \u0103n ri\u00eang xi\u00ean 2 v\u00e0 2 nh\u00e1y 34).<\/p>\n Xi\u00ean 3<\/i><\/b> \u2013 trong lo\u1ea1i l\u00f4 xi\u00ean n\u00e0y, b\u1ea1n s\u1ebd ph\u1ea3i l\u1ef1a ch\u1ecdn ra 3 con l\u00f4 kh\u00e1c nhau, kh\u00f4ng gi\u1ed1ng nhau \u0111\u1ec3 t\u1ea1o ra b\u1ed9 ba \u0111\u1ec3 c\u01b0\u1ee3c. N\u1ebfu c\u1ea3 3 con l\u00f4 \u0111\u00f3 c\u00f9ng ra trong \u0111\u1ee3t quay th\u01b0\u1edfng x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc trong 1 ng\u00e0y c\u00f3 ngh\u0129a b\u1ea1n \u0111\u00e3 \u0103n l\u00f4 xi\u00ean 3, tr\u00fang th\u01b0\u1edfng.<\/span><\/p>\n Xi\u00ean 4<\/i><\/b> \u2013 gi\u1ed1ng nh\u01b0 xi\u00ean 2 v\u00e0 xi\u00ean 3, b\u1ea1n s\u1ebd ph\u1ea3i l\u1ef1a ch\u1ecdn ra 4 con l\u00f4 t\u1ea1o ra 4 s\u1ed1 \u0111\u1ec1 \u0111\u1ec3 c\u01b0\u1ee3c. Khi x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc quay th\u01b0\u1edfng, 4 con s\u1ed1 n\u00e0y \u0111\u1ec1u xu\u1ea5t hi\u1ec7n trong nh\u1eefng gi\u1ea3i th\u01b0\u1edfng, \u0111i\u1ec1u \u0111\u00f3 ch\u1ee9ng t\u1ecf b\u1ea1n \u0111\u00e3 g\u1eb7p may, b\u1ea1n s\u1ebd gi\u00e0nh \u0111\u01b0\u1ee3c ti\u1ec1n th\u01b0\u1edfng l\u1edbn v\u00f4 c\u00f9ng n\u1ebfu th\u1eafng xi\u00ean 4 n\u00e0y.<\/span><\/p>\n \u0110\u00e2y c\u00f3 th\u1ec3 n\u00f3i l\u00e0 \u0111\u1ec9nh cao c\u1ee7a ch\u01a1i l\u00f4 \u0111\u1ec1 khi m\u00e0 d\u1ef1 \u0111\u01b0\u1ee3c t\u1eeb 2 con s\u1ed1 tr\u1edf l\u00ean. T\u1ef7 l\u1ec7 n\u00e0y th\u1ea5p b\u1edfi v\u1eady m\u00e0 b\u00ed k\u00edp ch\u01a1i ph\u1ea3i r\u1ea5t hi\u1ec7u qu\u1ea3 m\u1edbi d\u00e1m theo. N\u00f3 gi\u1ed1ng nh\u01b0 ki\u1ec3u ch\u01a1i l\u00f4 b\u00ecnh th\u01b0\u1eddng nh\u01b0 b\u1ea1n \u0111ang h\u1ecdc c\u1ea5p 1, xi\u00ean 2 l\u00e0 c\u1ea5p 2 c\u1ee9 th\u1ebf t\u1edbi b\u1ea1ch th\u1ee7 \u0111\u1ec1 m\u00e0 tr\u00fang th\u00ec cho l\u00e0 l\u00ean cao h\u1ecdc. \u0110\u1ed9 kh\u00f3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 th\u1ebf, ki\u1ebfn th\u1ee9c c\u1ee7a b\u1ea1n c\u0169ng t\u1ef7 l\u1ec7 theo th\u00ec m\u1edbi c\u00f3 th\u1ec3 th\u1eafng \u0111\u01b0\u1ee3c.<\/p>\n \u1ede \u0111\u1ee3t quay th\u01b0\u1edfng c\u1ee7a x\u1ed5 s\u1ed1 mi\u1ec1n b\u1eafc c\u00f3 27 gi\u1ea3i \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi bi\u1ebft \u0111\u1ebfn. Hai con s\u1ed1 cu\u1ed1i c\u1ee7a 27 gi\u1ea3i \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u00e0m k\u1ebft qu\u1ea3 l\u00f4. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a x\u00e1c su\u1ea5t \u0111\u1ec3 tr\u00fang 1 con l\u00f4 th\u01b0\u1eddng l\u00ean \u0111\u1ebfn 23.75%. B\u00ecnh th\u01b0\u1eddng b\u1ea1n ph\u1ea3i \u0111\u00e1nh t\u1ed1i thi\u1ec3u 5 con l\u00f4 trong 1 ng\u00e0y m\u1edbi c\u00f3 kh\u1ea3 n\u0103ng tr\u00fang \u0111\u01b0\u1ee3c m\u1ed9t con.<\/span><\/p>\n Sau \u0111\u00e2y ch\u00fang ta t\u00ecm hi\u1ec3u c\u00e1ch t\u00ednh x\u00e1c su\u1ea5t th\u1eafng <\/span>xi\u00ean 2, 3, 4<\/b> bao nhi\u00eau?<\/span><\/p>\n X\u00e1c su\u1ea5t tr\u00fang xi\u00ean 2 = 23.76% x 23.76% = 0.0564 = 5.6%<\/span><\/p>\n X\u00e1c su\u1ea5t tr\u00fang xi\u00ean 3 = 23.76% x 23.76% x 23.76% = 0.0134 = 1.34%<\/span><\/p>\n X\u00e1c su\u1ea5t tr\u00fang xi\u00ean 4 = 23.76% x 23.76% x 23.76% x 23.76% = 0.32%<\/span><\/p>\n Tuy x\u00e1c su\u1ea5t xi\u00ean 2 c\u00f3 t\u1ef7 l\u1ec7 th\u1eafng cao h\u01a1n xi\u00ean 3, 4 nh\u01b0ng gi\u1ea3i th\u01b0\u1edfng l\u1ea1i kh\u00f4ng l\u1edbn b\u1eb1ng. C\u00f2n ng\u01b0\u1ee3c l\u1ea1i xi\u00ean 4 kh\u00f3 th\u1eafng th\u01b0\u1edfng nh\u01b0ng l\u1ea1i c\u00f3 t\u1ef7 l\u1ec7 \u0103n th\u01b0\u1edfng l\u1edbn h\u01a1n.<\/span><\/p>\n Khi ch\u01a1i <\/span>xi\u00ean 2, 3, 4<\/b> b\u1ea1n n\u00ean th\u1ed1ng k\u00ea xi\u00ean hay ra nh\u1ea5t, c\u00e1c c\u1eb7p xi\u00ean hay \u0111i v\u1edbi nhau, soi c\u1ea7u l\u00f4 mi\u1ec1n b\u1eafc<\/span>, soi c\u1ea7u b\u1ea1ch th\u1ee7 l\u00f4 xi\u00ean<\/span>. Nh\u1eefng c\u00e1ch \u0111\u00f3 s\u1ebd khi\u1ebfn cho b\u1ea1n nhanh c\u00f3 \u0111\u01b0\u1ee3c chi\u1ebfn th\u1eafng, d\u1ec5 th\u1eafng h\u01a1n khi ch\u01a1i. Mu\u1ed1n c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng c\u1eb7p s\u1ed1 c\u00f3 c\u01a1 h\u1ed9i v\u1ec1 cao, \u0111\u1ea7u ti\u00ean b\u1ea1n h\u00e3y k\u1ebft h\u1ee3p 4 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 \u0111\u01b0a ra k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c nh\u1ea5t.<\/span><\/p>\n B\u00e2y gi\u1edd<\/span> ch\u1eafc b\u1ea1n \u0111\u00e3 hi\u1ec3u h\u01a1n v\u1ec1<\/span> xi\u00ean 2, 3, 4 <\/b>v\u00e0 \u0111\u1ec3 th\u1eafng b\u1ea1n h\u00e3y n\u1eafm ch\u1eafc b\u00ed k\u00edp ch\u01a1i c\u1ee7a n\u00f3. H\u01a1n n\u1eefa, b\u1ea1n h\u00e3y h\u1ecdc c\u00e1ch t\u00ednh \u0111i\u1ec3m c\u1ee7a tr\u00f2 ch\u01a1i n\u00e0y. B\u00e0i vi\u1ebft tr\u00ean ch\u1eafc \u0111\u00e3 gi\u00fap b\u1ea1n hi\u1ec3u h\u01a1n v\u1ec1 c\u00e1ch t\u00ednh tr\u00f2 ch\u01a1i n\u00e0y. N\u1ebfu mu\u1ed1n ch\u01a1i th\u1eafng n\u00f3 h\u00e3y tham kh\u1ea3o b\u00e0i vi\u1ebft tr\u00ean \u0111\u00f3 nh\u00e9 \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c kinh nghi\u1ec7m cho b\u1ea3n th\u00e2n. <\/span><\/p>\n Ch\u00fac b\u1ea1n may m\u1eafn!<\/span><\/p>\n<\/div>\nXi\u00ean 2, 3, 4 l\u00e0 g\u00ec?<\/span><\/span><\/h2>\n
B\u00ed k\u00edp ch\u01a1i xi\u00ean 2, 3, 4<\/span><\/span><\/h2>\n
C\u00e1ch t\u00ednh x\u00e1c su\u1ea5t tr\u00fang xi\u00ean 2, 3, 4 b\u1ea1n n\u00ean bi\u1ebft<\/span><\/span><\/h2>\n
L\u01b0u \u00fd:<\/b><\/h3>\n