Ch\u1eafc h\u1eb3n nhi\u1ec1u ng\u01b0\u1eddi \u0111\u00e3 kh\u00f4ng c\u00f2n xa l\u1ea1 v\u1edbi c\u00e1c c\u00e1ch ch\u01a1i x\u1ed5 s\u1ed1 ph\u1ed5 bi\u1ebfn, \u0111\u1ed9c \u0111\u00e1o v\u00e0 \u0111\u1eb7c bi\u1ec7t nh\u01b0 d\u1ef1 \u0111o\u00e1n l\u00f4 tr\u01b0\u1ee3t mi\u1ec1n B\u1eafc. Tuy nhi\u00ean, b\u1ea1n c\u00f3 th\u1eafc m\u1eafc t\u1ea1i sao m\u00ecnh d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y nhi\u1ec1u m\u00e0 v\u1eabn ch\u01b0a \u0111\u1ea1t \u0111\u01b0\u1ee3c gi\u1ea3i th\u01b0\u1edfng l\u1edbn nh\u01b0 ng\u01b0\u1eddi kh\u00e1c kh\u00f4ng? H\u00e3y theo d\u00f5i nh\u1eefng c\u1ea9m nang sau \u0111\u00e2y v\u00e0 b\u1ea1n s\u1ebd t\u00ecm \u0111\u01b0\u1ee3c c\u00e2u tr\u1ea3 l\u1eddi.<\/span><\/p>\n Th\u00f4ng th\u01b0\u1eddng \u0111\u1ed1i v\u1edbi c\u00e1c tr\u00f2 ch\u01a1i l\u00f4 \u0111\u1ec1 th\u00f4ng th\u01b0\u1eddng, ch\u00fang ta v\u1eabn suy \u0111o\u00e1n k\u00ec ti\u1ebfp theo d\u1ef1a v\u00e0o nh\u1eefng con s\u1ed1 \u0111\u00e3 ra ho\u1eb7c trong gi\u1ea3i \u0111\u1eb7c bi\u1ec7t,v.v..Tuy nhi\u00ean d\u1ef1 \u0111o\u00e1n l\u00f4 tr\u01b0\u1ee3t mi\u1ec1n B\u1eafc l\u1ea1i ho\u00e0n to\u00e0n \u0111i ng\u01b0\u1ee3c l\u1ea1i: \u0111\u00f3 l\u00e0 c\u00e1ch \u0111\u00e1nh theo c\u00e1c c\u1eb7p s\u1ed1 kh\u00f4ng v\u1ec1. C\u1ee5 th\u1ec3, ng\u01b0\u1eddi ch\u01a1i s\u1ebd quan s\u00e1t, nghi\u00ean c\u1ee9u b\u1ea3ng k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 tr\u1ea3 v\u1ec1 trong m\u1ed9t th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 l\u1ef1a ch\u1ecdn ra nh\u1eefng con s\u1ed1 ch\u01b0a ho\u1eb7c \u00edt xu\u1ea5t hi\u1ec7n \u0111\u1ec3 \u0111\u00e1nh trong k\u00ec k\u1ebf ti\u1ebfp.<\/span><\/p>\n Theo c\u00e1ch n\u00e0y, ng\u01b0\u1eddi ch\u01a1i l\u00f4 tr\u01b0\u1ee3t s\u1ebd t\u00f9y ch\u1ecdn xi\u00ean 10, xi\u00ean 8 ho\u1eb7c xi\u00ean 4. Tr\u01b0\u1eddng h\u1ee3p n\u1ebfu c\u00f3 10 con c\u00f9ng tr\u01b0\u1ee3t th\u00ec \u0111\u1eb7t 1 \u0103n 10; 1 \u0103n 7 v\u1edbi tr\u01b0\u1eddng h\u1ee3p 8 con c\u00f9ng tr\u01b0\u1ee3t v\u00e0 4 con c\u00f9ng tr\u01b0\u1ee3t s\u1ebd l\u00e0 \u0111\u1eb7t 1 \u0103n 2. V\u1edbi c\u00e1ch ch\u01a1i n\u00e0y, ta c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t ch\u1ecdn 1 l\u00f4 tr\u01b0\u1ee3t nh\u01b0 sau:<\/span><\/p>\n V\u1edbi trung b\u00ecnh t\u1eeb 21.5 \u2013 22 s\u1ed1 tr\u00f2 ch\u01a1i ch\u1ec9 c\u00f3 27 gi\u1ea3i. V\u1eady n\u00ean c\u00f3 t\u1edbi 78 s\u1ed1 tr\u01b0\u1ee3t trong t\u1ed5ng 100 s\u1ed1 ban \u0111\u1ea7u. Nh\u01b0 v\u1eady x\u00e1c su\u1ea5t s\u1ebd l\u00e0 78%. T\u1eeb \u0111\u00f3, ta c\u00f3 th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c c\u00e1c x\u00e1c su\u1ea5t khi ch\u1ecdn xi\u00ean nh\u01b0 sau:<\/span><\/p>\n Nh\u01b0 v\u1eady ta c\u00f3 th\u1ec3 th\u1ea5y m\u1eb7c d\u00f9 t\u1ef7 l\u1ec7 \u0111\u1eb7t c\u01b0\u1ee3c \u0103n c\u00e0ng ng\u00e0y c\u00e0ng t\u0103ng cao nh\u01b0ng x\u00e1c su\u1ea5t tr\u01b0\u1ee3t c\u00f9ng nhau l\u1ea1i gi\u1ea3m d\u1ea7n.<\/span><\/p>\n V\u1edbi c\u00e1ch ch\u01a1i n\u00e0y nhi\u1ec1u ng\u01b0\u1eddi c\u00f2n cho r\u1eb1ng \u0111\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u00f4 tr\u00fang ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u1ef1 \u0111o\u00e1n l\u00f4 tr\u01b0\u1ee3t mi\u1ec1n B\u1eafc. Tuy nhi\u00ean, c\u00e1ch g\u1ecdi n\u00e0o c\u0169ng h\u1ee3p l\u00ed. Theo \u0111\u00f3, ng\u01b0\u1eddi ch\u01a1i theo c\u00e1ch n\u00e0y lo\u1ea1i t\u1eeb 6 t\u1edbi 10 s\u1ed1 sau khi \u0111\u00e3 ch\u1ecdn kho\u1ea3ng t\u1eeb 90 \u2013 94 s\u1ed1 kh\u00e1c nhau. \u0110i\u1ec3m b\u1ea5t l\u1ee3i l\u00fac n\u00e0y l\u00e0 b\u1ea1n s\u1ebd ph\u1ea3i ch\u1ecbu thua thi\u1ec7t l\u00ean t\u1edbi 3.5 l\u1ea7n ti\u1ec1n c\u01b0\u1ee3c 1 s\u1ed1 n\u1ebfu nh\u01b0 c\u00f3 m\u1ed9t trong 6 \u2013 10 s\u1ed1 \u0111\u00e3 lo\u1ea1i \u0111\u01b0\u1ee3c ra l\u00f4.<\/span><\/p>\n V\u00ed d\u1ee5: Ta \u0111\u1eb7t c\u01b0\u1ee3c 1 \u0111i\u1ec3m l\u00f4 25.000\u0111. Khi \u0111\u00f3, s\u1ed1 ti\u1ec1n c\u1ea7n \u0111\u1ec3 \u0111\u1eb7t c\u01b0\u1ee3c cho 100 s\u1ed1 s\u1ebd l\u00e0 2.500.000\u0111 (a).<\/span><\/p>\n B\u1ea1n s\u1ebd tr\u00fang c\u1ea3 27 gi\u1ea3i khi \u0111\u00e1nh h\u1ebft 100 s\u1ed1 v\u00e0 gi\u1ea3i th\u01b0\u1edfng l\u00e0: 27 x 80.000 = 2.160.000\u0111 (b).<\/span><\/p>\n (b) \u2013 (a) = 2.160.000 \u2013 2.500.000 = -340.000\u0111. Nh\u01b0 v\u1eady, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y n\u1ebfu s\u1eed d\u1ee5ng s\u1ed1 ti\u1ec1n gi\u1ed1ng nhau \u1edf t\u1eebng con trong 100 s\u1ed1 th\u00ec k\u1ebft qu\u1ea3 v\u1eabn s\u1ebd \u00e2m 340.000\u0111. \u0110i\u1ec1u n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi vi\u1ec7c b\u1ea1n \u0111\u00e1nh tr\u01b0\u1ee3t 13 \u0111i\u1ec3m l\u00f4.<\/span><\/p>\n <\/span><\/p>\n Theo kinh nghi\u1ec7m ch\u01a1i l\u00f4 tr\u01b0\u1ee3t c\u1ee7a c\u00e1c chuy\u00ean gia l\u00e2u n\u0103m th\u00ec ph\u01b0\u01a1ng ph\u00e1p n\u00e0y d\u1ef1a v\u00e0o k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 tr\u1ea3 v\u1ec1 c\u1ee7a m\u1ed9t th\u1eddi gian (th\u01b0\u1eddng kho\u1ea3ng 1 th\u00e1ng) \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n c\u00e1c ng\u00e0y ti\u1ebfp theo.<\/span><\/p>\n V\u00ed d\u1ee5: Trong v\u00f2ng 30 ng\u00e0y theo d\u00f5i k\u1ebft qu\u1ea3, ch\u00fang ta nh\u1eadn th\u1ea5y c\u00f3 21 ng\u00e0y kh\u00f4ng v\u1ec1 s\u1ed1 56, c\u00e1c s\u1ed1 28, 32 ch\u01b0a xu\u1ea5t hi\u1ec7n trong v\u00f2ng 18 ng\u00e0y.<\/span><\/p>\n Nh\u01b0 v\u1eady, ta s\u1ebd \u0111\u1ea7u t\u01b0 v\u00e0o c\u00e1c s\u1ed1 28, 32 trong 2 ng\u00e0y ti\u1ebfp theo. V\u1ec1 s\u1ed1 ti\u1ec1n c\u01b0\u1ee3c c\u00f3 th\u1ec3 linh \u0111\u1ed9ng t\u00f9y theo quy\u1ebft \u0111\u1ecbnh t\u1eebng ng\u01b0\u1eddi. C\u00f3 th\u1ec3 chia \u0111\u1ec1u ho\u1eb7c d\u00e0nh ph\u1ea7n nhi\u1ec1u cho m\u1ed9t con s\u1ed1 m\u00e0 b\u1ea1n ngh\u0129 s\u1ebd c\u00f3 c\u01a1 h\u1ed9i v\u1ec1 cao h\u01a1n.<\/span><\/p>\n \u0110\u1ed1i v\u1edbi con s\u1ed1 d\u1eabn \u0111\u1ea7u v\u1ec1 chu\u1ed7i kh\u00f4ng v\u1ec1 l\u00e0 56 th\u00ec b\u1ea1n c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn d\u1ef1 \u0111o\u00e1n l\u00f4 tr\u01b0\u1ee3t MB trong m\u1ed9t h\u00f4m \u0111\u1eb9p tr\u1eddi ho\u1eb7c tin theo kinh nghi\u1ec7m \u0111\u1ed5i ng\u01b0\u1ee3c l\u1ea1i th\u00e0nh 65 c\u1ee7a ng\u01b0\u1eddi x\u01b0a.<\/span><\/p>\n T\u1ea5t nhi\u00ean, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn th\u00eam nhi\u1ec1u con s\u1ed1 b\u1eb1ng t\u00f9y ch\u1ecdn xi\u00ean 10, xi\u00ean 8 ho\u1eb7c xi\u00ean 4 nh\u01b0 h\u01b0\u1edbng d\u1eabn tr\u00ean. <\/span><\/p>\n \u0110\u00e2y l\u00e0 c\u00e1ch kh\u00e1 th\u00f4ng d\u1ee5ng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u hi\u1ec7n nay \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n l\u00f4 tr\u01b0\u1ee3t mi\u1ec1n B\u1eafc. N\u00f3 ho\u00e0n to\u00e0n ng\u01b0\u1ee3c l\u1ea1i so v\u1edbi ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1nh v\u00e0o nh\u1eefng con s\u1ed1 kh\u00f4ng v\u1ec1 \u0111\u1ec3 \u0111\u00e1nh ph\u00eda tr\u00ean.<\/span><\/p>\n Theo \u0111\u00f3, b\u1ea1n s\u1ebd c\u1ea7n theo d\u00f5i k\u1ebft qu\u1ea3 x\u1ed5 s\u1ed1 trong v\u00f2ng 1 th\u00e1ng, sau \u0111\u00f3 \u0111\u00e1nh d\u1ea5u t\u1eeb 6 \u2013 10 con s\u1ed1 c\u00f3 t\u1ea7n su\u1ea5t xu\u1ea5t hi\u1ec7n \u00edt nh\u1ea5t. Sau khi \u0111\u00e3 lo\u1ea1i b\u1ecf xong, b\u1ea1n s\u1ebd l\u1ef1a ch\u1ecdn c\u00e1c s\u1ed1 c\u00f2n l\u1ea1i.<\/span><\/p>\n L\u01b0u \u00fd: <\/span><\/p>\n M\u1eb7c d\u00f9 v\u1eabn d\u1ef1a v\u00e0o y\u1ebfu t\u1ed1 may m\u1eafn, tuy nhi\u00ean t\u1eeb nh\u1eefng c\u1ea9m nang d\u1ef1 \u0111o\u00e1n l\u00f4 tr\u01b0\u1ee3t mi\u1ec1n B\u1eafc \u0111\u01b0\u1ee3c chia s\u1ebb tr\u00ean \u0111\u00e2y, ch\u00fang t\u00f4i tin r\u1eb1ng vi\u1ec7c \u0111\u1eb7t c\u01b0\u1ee3c c\u1ee7a b\u1ea1n s\u1ebd tr\u1edf n\u00ean ch\u1eafc ch\u1eafn v\u00e0 t\u1ef7 l\u1ec7 tr\u00fang th\u01b0\u1edfng cao l\u00ean nhi\u1ec1u l\u1ea7n. \u0110\u1ec3 bi\u1ebft th\u00eam nhi\u1ec1u th\u00f4ng tin h\u01a1n n\u1eefa b\u1ea1n c\u00f3 th\u1ec3 theo d\u00f5i th\u00eam c\u00e1ch xem l\u00f4 tr\u01b0\u1ee3t h\u00f4m nay v\u00e0 d\u1ef1 \u0111o\u00e1n l\u00f4 ng\u00e0y mai b\u1ea1n nh\u00e9!<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n <\/main><\/div>\n<\/div>\nKh\u00e1i ni\u1ec7m l\u00f4 tr\u01b0\u1ee3t:<\/span><\/h3>\n
C\u00e1ch d\u1ef1 \u0111o\u00e1n:<\/span><\/h3>\n
C\u00e1ch 1:<\/span><\/h4>\n
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C\u00e1ch 2:<\/span><\/h4>\n
L\u00e0m Sao \u0110\u1ec3 D\u1ef1 \u0110o\u00e1n L\u00f4 Tr\u01b0\u1ee3t Mi\u1ec1n B\u1eafc Hi\u1ec7u Qu\u1ea3:<\/span><\/h2>\n
\u0110\u00e1nh v\u00e0o nh\u1eefng con s\u1ed1 kh\u00f4ng v\u1ec1:<\/span><\/h3>\n
\u0110\u00e1nh l\u00f4 tr\u00fang t\u1eeb vi\u1ec7c lo\u1ea1i l\u00f4 kh\u00f4ng v\u1ec1:<\/span><\/h3>\n
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th\u1ea7n t\u00e0i ch\u1ed1t s\u1ed1 mi\u1ec1n b\u1eafc v\u00edp h\u00f4m nay<\/span><\/strong><\/h4>\n
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