[IQ題] [數學題]100人搬100塊磚

，描述：問要幾多男人、女人同細路仔

100人搬100塊磚tvb now,tvbnow,bttvb* H Y% ^* n4 a
規則# x" l: W( W2 p* B8 ], e; B
只何用100人搬100塊磚,不能多也不能小...
100人當中有男人、女人同細路仔: L# F: i. _' k2 \" H+ t
1個男人搬6塊磚* h, W+ T$ G; y5 @+ |! Q8 h
1女人搬3塊磚
2個細路仔搬1塊磚
**************************************************************+ H; p/ b I a: `) k. e: S: r/ V
問搬100塊磚5.39.217.774 O9 ]& w" r- Y( U& m
要幾多男人、女人同細路仔

答案30號公佈

[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

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twinsdragon

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發表於 2007-10-13 05:40 PM | 只看該作者

That is a very simple mathematics question.tvb now,tvbnow,bttvb( [3 g l+ Z) {9 Z0 M7 i6 j
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb3 h; P+ m# Y% e3 j4 ~+ j% a: a- m
6x + 3y + z/2 = 100 Formula 1+ u; Z0 n3 w' R1 A0 n1 I
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.77. H9 h! T# w6 `
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.779 R& q* b* I& R( z/ ^& N& Y" O0 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 = 80.5.39.217.77; e3 q T% f. E5 M& H: r) r
Eventually, the answer is 20 female and 80 children and no male.

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alan1234

浪人

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發表於 2007-10-14 12:19 AM | 只看該作者

two answers

man,female,children公仔箱論壇& n( z! z: j! Q7 A7 {
0,20,80 or 5,9,86

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RyanC

原始人

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發表於 2007-10-14 10:46 PM | 只看該作者

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 tvb now,tvbnow,bttvb2 j2 d" P$ W9 M# r, N$ v
11x + 5y = 100 Formula 5

11X must be 0 or multiple of 5
that meanz x must be 0 or 5

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manstein

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發表於 2007-10-15 08:28 PM | 只看該作者

86 childrentvb now,tvbnow,bttvb/ J: G4 @- K0 x; m9 D
5 male 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。+ C0 B) n1 t: i1 }( q; L- G$ O4 U) L
9 female

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dafunhei123