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。! B! ]7 G5 m; R
規則tvb now,tvbnow,bttvb7 r+ g. M% r. Y; E. ]0 I5 u- H
只何用100人搬100塊磚,不能多也不能小...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。8 J, N, c6 y9 E, w
100人當中有男人、女人同細路仔 ' z- @. o5 l' x1 R% ^, Xtvb now,tvbnow,bttvb1個男人搬6塊磚# H4 z: {( i Z- d5 l! W
1女人搬3塊磚 . \9 T/ q) q) P( i1 S0 q% T2個細路仔搬1塊磚 6 X8 }/ [5 c) v. V. R& Y% \$ r5 o Z************************************************************** * V( y8 a( d: ~& }/ o& S; @2 n: t問搬100塊磚 8 E1 }9 S% W) V [/ Q$ T8 Z公仔箱論壇要幾多男人、女人同細路仔 ! G9 \0 }- }2 n& {公仔箱論壇公仔箱論壇& C7 E7 b% o8 D
答案30號公佈tvb now,tvbnow,bttvb6 O$ U9 a7 N4 C7 N! n' W
公仔箱論壇$ X+ d+ { E/ n7 r4 Q
[ 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.5.39.217.76, G5 u1 `. u5 u" T
Let x = Male, y = Female, z = Child / d6 J: Z: V% z8 N5 l1 N$ u7 _tvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1 6 \: e( _' G, Y! n9 q7 wx + y + z = 100 Formula 2* v( z; V4 v- s" a4 U4 v6 j
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb( U) `9 X8 U9 h) X2 U3 r. m1 w
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4( W2 \8 j0 e a) S! V4 R7 s0 o
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb- j" d6 L* i3 X8 O5 j
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb5 |, u& q" {. ?& O
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.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。. p, D; _* }+ L
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
