[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塊磚公仔箱論壇0 d  K  @  G9 ?) Y6 w/ n4 Z( C; H" d
規則
只何用100人搬100塊磚,不能多也不能小...2 g7 _2 }0 k  @- @
100人當中有男人、女人同細路仔
1個男人搬6塊磚
1女人搬3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。5 j- r7 n8 r+ v' R; O( b
2個細路仔搬1塊磚公仔箱論壇: b2 @3 I* E# b" J0 S! p
**************************************************************$ p/ a% \) d4 K( R5 ]/ y5 G- p
問搬100塊磚
要幾多男人、女人同細路仔2 M  n- S9 C" ~/ B" g( K

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

初級武將

Rank: 7 Rank: 7 Rank: 7

2^#

發表於 2007-10-13 05:40 PM | 只看該作者

That is a very simple mathematics question.
Let x = Male, y = Female, z = Child公仔箱論壇5 [& J7 x. m* T/ B
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2TVBNOW 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。; m, @9 @& A+ F5 I3 q
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 41 `' u. E! Q E/ @2 ]
Formula 4 can change into 11x + 5y = 100 Formula 5
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb* Y7 S" k e/ _% i' X3 F/ g
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.) x% U8 r3 W4 ~5 E
Eventually, the answer is 20 female and 80 children and no male.

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alan1234

浪人

3^#

發表於 2007-10-14 12:19 AM | 只看該作者

two answers

man,female,children
0,20,80 or 5,9,86

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RyanC

原始人

4^#

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
11x + 5y = 100 Formula 5

5.39.217.76$ D$ i) ]" }0 I6 P( \2 V7 r' ?
11X must be 0 or multiple of 5TVBNOW 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。. f9 B4 q4 m6 N1 M6 [
that meanz x must be 0 or 5

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manstein