100人搬100塊磚TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。0 Z, V9 e9 [/ E7 `
規則- u S" J0 M4 d0 g# i; E
只何用100人搬100塊磚,不能多也不能小...( K' M A% J5 e, Q! y7 @8 L
100人當中有男人、女人同細路仔+ `8 o2 R' P g% z' A8 \
1個男人搬6塊磚公仔箱論壇7 K2 S% p0 P$ v! f- ^* k; D
1女人搬3塊磚5.39.217.76 K. x b9 Q; _
2個細路仔搬1塊磚$ B9 {! o/ q( m" y
**************************************************************# Y k9 C) p* `
問搬100塊磚% ^ |0 Q8 U/ N S
要幾多男人、女人同細路仔 * _+ i; I- P5 ~" g- w * f/ O& r! ^3 s; O, D9 v2 v公仔箱論壇答案30號公佈 * f y( ]/ ]+ ftvb now,tvbnow,bttvb $ k6 e# E( p; @* ?[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]作者: twinsdragon 時間: 2007-10-13 05:40 PM
That is a very simple mathematics question. # [; E- y% V# F. ?. c/ g; U公仔箱論壇Let x = Male, y = Female, z = Child* J" o: o3 | k
6x + 3y + z/2 = 100 Formula 1 9 u& H$ p0 ]# S6 Q, F! [0 {5.39.217.76x + y + z = 100 Formula 2- u& O6 B/ Q. P- l' ]$ |
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇6 b- w- J8 ~2 _+ e
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。2 J5 U& r2 G" B$ M; ?- Z5 [
Formula 4 can change into 11x + 5y = 100 Formula 5 / }/ T; B1 g# h! NIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 3 F: J+ i" y' B. v, IAnd between 0 and 9, only 0 can give me a single number of y. So, x has to be 0 and y have to be 20. Then put x and y back to formula 1, we get z = 80.tvb now,tvbnow,bttvb3 U( M5 f# \* D) D' A! O' p
Eventually, the answer is 20 female and 80 children and no male.作者: alan1234 時間: 2007-10-14 12:19 AM 標題: two answers
$ x; p/ W8 _, R6 Q: L' \tvb now,tvbnow,bttvb11X must be 0 or multiple of 5公仔箱論壇, P+ O/ D. {: H0 V) J( }; [# u- \
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children' N9 d' f% f' v5 { w9 O
5 male , G8 ?2 f, p/ E+ C2 ?TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM