100人搬100塊磚8 L% X3 N" r' L' d4 K
規則 ) U8 G( a& u" Z, {* p2 C5 R" B只何用100人搬100塊磚,不能多也不能小... - [3 o1 H9 R- ^5.39.217.76100人當中有男人、女人同細路仔" A8 z% w7 y4 l
1個男人搬6塊磚 7 Q2 ]$ j) y6 C: c6 k8 ^2 w1女人搬3塊磚( M5 d& l* ?% p @, m
2個細路仔搬1塊磚' w* X. v+ ^0 a7 y2 }4 P
************************************************************** # _ \+ O J! e5.39.217.76問搬100塊磚 ( d1 {" h& c- r, } \# P8 y* oTVBNOW 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。要幾多男人、女人同細路仔5.39.217.76# D. K O2 ] \: n, p$ s
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答案30號公佈 ( v7 w, y8 H$ p5.39.217.76, S+ W0 @; d; D& t. F
[ 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. ' j4 X( b7 O2 n3 r8 t6 u3 }1 ZLet x = Male, y = Female, z = Child : B7 A& q. i& A' w" s7 Y4 l' e公仔箱論壇6x + 3y + z/2 = 100 Formula 1 6 |1 }, a1 S+ J4 k; F" a# G% ~) Y5.39.217.76x + y + z = 100 Formula 2tvb now,tvbnow,bttvb6 c7 i8 P- e2 I$ _
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb/ P- W' n+ m% ]9 P+ N
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4( N1 k* k7 Z( _( K# T2 s+ o m, _
Formula 4 can change into 11x + 5y = 100 Formula 5 m# [6 ?6 A- Q8 z2 h5 M, }9 L
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.9 @4 R. F5 @" V
And 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.公仔箱論壇. ^( m/ c# L% v) g* m( l% Y
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
man,female,children + `2 u% u6 m T0 i6 f" a' k+ X, STVBNOW 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。0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
- w8 `5 v6 C# E$ mtvb now,tvbnow,bttvb11X must be 0 or multiple of 5% [) C; y2 p/ ^$ }, L( Z' O+ @+ J
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children ) I9 ^4 J: S" d! }! B5 male c# S6 m9 t7 Z6 R
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
