{"id":18140,"date":"2024-04-10T03:29:45","date_gmt":"2024-04-10T03:29:45","guid":{"rendered":"https:\/\/soicau5057.minhngocxoso.com\/?p=18140"},"modified":"2024-04-10T03:29:45","modified_gmt":"2024-04-10T03:29:45","slug":"lo-de-la-gi-thuat-toan-tinh-lo-de-va-cach-choi-de-trung","status":"publish","type":"post","link":"https:\/\/dudoanbachthulo.com\/lo-de-la-gi-thuat-toan-tinh-lo-de-va-cach-choi-de-trung\/","title":{"rendered":"l\u00f4 \u0111\u1ec1 l\u00e0 g\u00ec? thu\u1eadt to\u00e1n t\u00ednh l\u00f4 \u0111\u1ec1 v\u00e0 c\u00e1ch ch\u01a1i d\u1ec5 tr\u00fang"},"content":{"rendered":"\n
L\u00e0 m\u1ed9t d\u00e2n ch\u01a1i l\u00e3o l\u00e0ng trong b\u1ed9 m\u00f4n x\u1ed5 s\u1ed1 th\u00ec ch\u00fang ta kh\u00f4ng th\u1ec3 n\u00f3i \u0111\u1ebfn chuy\u1ec7n \u201c\u0103n may\u201d \u0111\u1ec3 d\u00e0nh chi\u1ebfn th\u1eafng \u0111\u01b0\u1ee3c m\u00e0 m\u1ecdi ki\u1ebfn th\u1ee9c v\u1ec1 l\u00f4 \u0111\u1ec1 l\u00e0 g\u00ec? C\u00e1c b\u00ed k\u00edp b\u1eaft l\u00f4 v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 n\u1eafm \u0111\u01b0\u1ee3c thu\u1eadt to\u00e1n t\u00ednh l\u00f4 \u0111\u1ec1 \u0111\u1ec9nh cao \u0111\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c x\u00e1c su\u1ea5t th\u00e0nh c\u00f4ng m\u1ed7i ng\u00e0y l\u00e0 bao nhi\u00eau ph\u1ea7n tr\u0103m l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c ph\u1ea3i n\u1eafm v\u1eefng.<\/p>\n\n\n\n
Ch\u1eafc ch\u1eafn r\u1eb1ng tr\u00f2 ch\u01a1i n\u00e0y l\u00e0 thi\u00ean bi\u1ebfn v\u1ea1n h\u00f3a, ch\u00fang ta kh\u00f4ng th\u1ec3 n\u00f3i tr\u01b0\u1edbc \u0111\u01b0\u1ee3c r\u1eb1ng li\u1ec7u h\u00f4m nay con s\u1ed1 \u0111\u01b0\u1ee3c ch\u1ecdn c\u00f3 v\u1ec1 hay kh\u00f4ng nh\u01b0ng vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u1ec3 gi\u00fap t\u0103ng t\u1ef7 l\u1ec7 tr\u00fang l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft ph\u1ea3i l\u00e0m \u0111\u1ec3 c\u00f3 th\u1ec3 n\u1eafm ch\u1eafc \u0111\u01b0\u1ee3c ph\u1ea7n th\u1eafng trong tay.<\/p>\n\n\n\n
L\u00f4 \u0111\u1ec1 l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c c\u00e1 c\u01b0\u1ee3c m\u00e0 ng\u01b0\u1eddi tham gia c\u1ea7n l\u1ef1a ch\u1ecdn cho m\u00ecnh 1 ho\u1eb7c nhi\u1ec1u con s\u1ed1 c\u00f3 2 ch\u1eef s\u1ed1 t\u1eeb 00 \u2013 99 \u0111\u1ec3 ch\u01a1i, k\u1ebft qu\u1ea3 s\u1ebd d\u1ef1a v\u00e0o 2 s\u1ed1 cu\u1ed1i c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c gi\u1ea3i trong b\u1ea3ng k\u1ebft qu\u1ea3 XSMB, XSMN ho\u1eb7c XSMT t\u00f9y v\u00e0o ng\u01b0\u1eddi ch\u01a1i \u0111\u1eb7t c\u01b0\u1ee3c v\u00e0o \u0111\u00e0i n\u00e0o.<\/p>\n\n\n\n
L\u00f4 \u0111\u1ec1 hi\u1ec7n nay kh\u00f4ng \u0111\u01b0\u1ee3c s\u1ef1 cho ph\u00e9p c\u1ee7a nh\u00e0 n\u01b0\u1edbc n\u00ean nh\u1eefng ng\u01b0\u1eddi ch\u01a1i v\u00e0 ho\u1ea1t \u0111\u1ed9ng trong l\u0129nh v\u1ef1c n\u00e0y th\u00ec \u0111\u1ec1u b\u1ecb coi l\u00e0 ph\u1ea1m ph\u00e1p. V\u1edbi r\u1ea5t nhi\u1ec1u c\u00e1ch ch\u01a1i, h\u00ecnh th\u1ee9c c\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n c\u00f9ng v\u1edbi s\u1ed1 ti\u1ec1n th\u1eafng v\u00f4 c\u00f9ng h\u1ea5p d\u1eabn th\u00ec kh\u00f4ng qu\u00e1 kh\u00f3 hi\u1ec3u khi su\u1ed1t nhi\u1ec1u th\u1eadp k\u1ec9 qua \u201cl\u00f4 \u0111\u1ec1\u201d v\u1eabn khi\u1ebfn cho ng\u01b0\u1eddi ch\u01a1i th\u00edch th\u00fa, \u201ckh\u00f4ng ch\u01a1i ch\u1ecbu kh\u00f4ng n\u1ed5i\u201d.<\/p>\n\n\n\n
C\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch ch\u01a1i m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 tham gia t\u00f9y v\u00e0o s\u1edf th\u00edch c\u0169ng nh\u01b0 chi\u1ebfn l\u01b0\u1ee3c c\u1ee7a b\u1ea3n th\u00e2n, c\u1ee5 th\u1ec3 nh\u01b0:<\/p>\n\n\n\n
C\u00f2n r\u1ea5t nhi\u1ec1u c\u00e1ch ch\u01a1i kh\u00e1c n\u1eefa nh\u01b0ng t\u00f4i ch\u1ec9 xin \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea m\u1ed9t v\u00e0i kh\u00e1i ni\u1ec7m quen thu\u1ed9c v\u00e0 \u0111\u1eb7c tr\u01b0ng nh\u1ea5t \u0111\u1ec3 b\u1ea1n \u0111\u1ecdc c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng tham kh\u1ea3o.<\/p>\n\n\n\n
Nh\u01b0 \u0111\u00e3 n\u00f3i \u1edf tr\u00ean, vi\u1ec7c n\u1eafm \u0111\u01b0\u1ee3c thu\u1eadt to\u00e1n t\u00ednh l\u00f4 \u0111\u1ec1 s\u1ebd gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng bi\u1ebft \u0111\u01b0\u1ee3c ng\u00e0y h\u00f4m nay s\u1ebd c\u00f3 x\u00e1c su\u1ea5t chi\u1ebfn th\u1eafng l\u00e0 bao nhi\u00eau ph\u1ea7n tr\u0103m. C\u00f9ng vi\u1ec7c ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u \u0111\u1ec3 t\u00ecm ra quy lu\u1eadt x\u1ed5 s\u1ed1 l\u1ea1i c\u00e0ng gi\u00fap cho ng\u01b0\u1eddi ch\u01a1i d\u1ec5 v\u00e0o b\u1edd h\u01a1n l\u00e0 nh\u1eefng ng\u01b0\u1eddi ch\u1ec9 bi\u1ebft d\u1ef1a v\u00e0o \u201cv\u1eadn may\u201d.<\/p>\n\n\n\n
T\u1eeb \u0111\u00e2y, b\u1ea1n s\u1ebd bi\u1ebft \u0111\u01b0\u1ee3c h\u00f4m nay ch\u00fang ta s\u1ebd l\u1ef1a ch\u1ecdn chi\u1ebfn thu\u1eadt ch\u01a1i v\u00e0 \u0111\u1ea7u t\u01b0 nh\u01b0 th\u1ebf n\u00e0o. C\u00f3 th\u1ec3 \u201ct\u1ea5t tay\u201d v\u1ed1n \u0111\u1ec3 \u0111\u00e1nh nhanh th\u1eafng nhanh hay kh\u00f4ng hay c\u1ea7n nh\u1eb9 nh\u00e0ng, ki\u00ean nh\u1eabn khi \u00e1p d\u1ee5ng c\u00e1ch ch\u01a1i nu\u00f4i l\u00f4.<\/p>\n\n\n\n
\u0110\u1ec3 gi\u00fap b\u1ea1n \u0111\u1ecdc c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh \u00e1p d\u1ee5ng t\u00ednh l\u00f4 \u0111\u1ec1 theo to\u00e1n h\u1ecdc, t\u00f4i xin ph\u00e2n t\u00edch chi ti\u1ebft nh\u01b0 sau.<\/p>\n\n\n\n
100% ch\u00ednh l\u00e0 t\u1ef7 l\u1ec7 th\u1eafng t\u1ed1i \u0111a khi b\u1ea1n \u00e1p d\u1ee5ng \u0111\u00e1nh 1 con (00 \u2013 99) cho 27 gi\u1ea3i l\u00f4 Mi\u1ec1n B\u1eafc.<\/p>\n\n\n\n
=> T\u1ef7 l\u1ec7 tr\u01b0\u1ee3t 1 con l\u00e0 99%.<\/p>\n\n\n\n
=> T\u1ea1ch 2 con s\u1ebd l\u00e0: 99% x 99% l\u00e0 x\u1ea5p x\u1ec9 98% v\u00e0 t\u1ea1ch 3 con s\u1ebd l\u00e0: 99% x 99% x 99% l\u00e0 x\u1ea5p x\u1ec9 97%.<\/p>\n\n\n\n
V\u1eady t\u1ea1ch h\u1ebft 27 con s\u1ebd l\u00e0: 99% m\u0169 27 (t\u1ee9c l\u00e0 99% nh\u00e2n cho 27 l\u1ea7n 99%).<\/p>\n\n\n\n
V\u1eady x\u00e1c su\u1ea5t tr\u00fang l\u00f4 s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 sau: [1 \u2013 (99% m\u0169 27)] x 100 = 23,7%.<\/p>\n\n\n\n
Ti\u1ebfp t\u1ee5c theo c\u00f4ng th\u1ee9c nh\u01b0 tr\u00ean ch\u00fang ta s\u1ebd suy ra \u0111\u01b0\u1ee3c:<\/p>\n\n\n\n
C\u00f4ng th\u1ee9c \u0103n l\u00f4 t\u00f4 = [1 \u2013 [(100 \u2013 n)% m\u0169 27)] x 10 (n l\u00e0 s\u1ed1 l\u01b0\u1ee3ng con b\u1ea1n \u0111\u00e1nh)<\/p>\n\n\n\n
=> Th\u1eafng 2 con l\u00f4 x\u1ea5p x\u1ec9 42%.<\/p>\n\n\n\n
=> Th\u1eafng 3 con l\u00f4 x\u1ea5p x\u1ec9 56%.<\/p>\n\n\n\n
=> Th\u1eafng 4 con l\u00f4 x\u1ea5p x\u1ec9 67%.<\/p>\n\n\n\n
\u0110\u00e2y l\u00e0 c\u00e1ch t\u00ednh \u0111\u1ed1i v\u1edbi \u0111\u00e0i x\u1ed5 s\u1ed1 Mi\u1ec1n B\u1eafc (27 gi\u1ea3i), \u0111\u1ed1i v\u1edbi Mi\u1ec1n Nam v\u00e0 Mi\u1ec1n Trung (18 gi\u1ea3i) th\u00ec b\u1ea1n c\u0169ng t\u00ednh t\u01b0\u01a1ng t\u1ef1, ch\u1ec9 c\u1ea7n thay \u0111\u1ed5i s\u1ed1 l\u00e0 \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
\u0110\u1ec3 gi\u1ea3i \u0111\u00e1p c\u00e2u h\u1ecfi ph\u1ea7n tr\u0103m th\u1eafng \u0111\u01b0\u1ee3c con \u0111\u1ec1 l\u00e0 bao nhi\u00eau th\u00ec c\u0169ng kh\u00e1 l\u00e0 \u0111\u01a1n gi\u1ea3n th\u00f4i, ai c\u0169ng c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n
Con \u0111\u1ec1 g\u1ed3m 2 ch\u1eef s\u1ed1 v\u1edbi 100 b\u1ed9 t\u1eeb 00 \u2013 99, th\u00ec vi\u1ec7c \u0111\u00e1nh 1 con \u0111\u1ec1 s\u1ebd c\u00f3 x\u00e1c su\u1ea5t th\u1eafng l\u00e0 1%.<\/p>\n\n\n\n
=> B\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u00e1nh song th\u1ee7 l\u00f4 (2 con) \u0111\u1ec3 n\u00e2ng c\u01a1 h\u1ed9i th\u00e0nh 2%.<\/p>\n\n\n\n
=> \u0110\u00e1nh d\u00e0n 36 con th\u00ec c\u01a1 h\u1ed9i s\u1ebd t\u0103ng l\u00ean th\u00e0nh 36%.<\/p>\n\n\n\n
=> D\u00e0n 70 con th\u00ec c\u01a1 h\u1ed9i l\u00fac n\u00e0y s\u1ebd l\u00e0 70%.<\/p>\n\n\n\n
Vi\u1ec7c c\u00e1c nh\u00e0 c\u00e1i online tr\u1ea3 cho ng\u01b0\u1eddi ch\u01a1i s\u1ed1 ti\u1ec1n th\u01b0\u1edfng l\u00e0 1 \u0103n 99 so v\u1edbi 1 \u0103n 70 c\u1ee7a ch\u1ee7 ghi \u0111\u1ec1 truy\u1ec1n th\u1ed1ng th\u00ec ng\u00e0y nay ng\u01b0\u1eddi ch\u01a1i th\u01b0\u1eddng s\u1ebd ch\u1ecdn d\u00e0n kh\u00e1 nhi\u1ec1u con s\u1ed1 \u0111\u1ec3 t\u0103ng c\u01a1 h\u1ed9i th\u1eafng cho m\u00ecnh v\u00ec d\u00f9 cho d\u00e0n t\u1eadn 70 con th\u00ec n\u1ebfu th\u1eafng v\u1eabn l\u1eddi \u0111\u01b0\u1ee3c 99 ph\u1ea7n.<\/p>\n\n\n\n
Tuy nhi\u00ean, n\u1ebfu thua c\u1ea3 70 con c\u00f9ng l\u00fac th\u00ec qu\u1ea3 th\u1eadt l\u00e0 b\u1ea1n qu\u00e1 \u201cnh\u1ecd\u201d, t\u00f4i c\u0169ng xin ch\u00e0o thua.<\/p>\n\n\n\n