[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

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100人搬100塊磚# J9 r7 w' T: D7 I  E# M2 |% S: ^
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只何用100人搬100塊磚,不能多也不能小...
0 b  }$ h3 [, u  I& ^100人當中有男人、女人同細路仔公仔箱論壇! C+ U1 `$ ^: E- E) r
1個男人搬6塊磚
" H" ]" d! Q7 d# N公仔箱論壇1女人搬3塊磚1 l) ^' l# v) B9 v
2個細路仔搬1塊磚
- {7 ~4 K7 C/ U1 B**************************************************************
' Z. G$ u9 ^  o0 R* E8 x$ TTVBNOW 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。問搬100塊磚
  f3 w/ @- D. G9 \( }2 ?- m要幾多男人、女人同細路仔: t2 M4 _* z% G( [; x8 x

/ M' e6 `/ X7 |答案30號公佈; {& A- Z& ]: z" r. D1 T

1 @! H6 Y+ m; n5.39.217.77[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

twinsdragon

That is a very simple mathematics question.公仔箱論壇/ M, b! V( F0 Z$ U: O5 R; z4 A: R
Let x = Male, y = Female, z = Child5.39.217.77: n7 V: \: z& V" ?6 `( K
6x + 3y + z/2 = 100   Formula 15.39.217.77" _* e0 `8 M9 }8 x5 D+ b$ s: @
x + y + z = 100    Formula 2
( [( l* `& e& [' cSimplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb) ~6 C% ~1 x$ N+ J9 q
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
6 z0 X' p7 l3 Q* [' f1 d, P& ~Formula 4 can change into 11x + 5y = 100 Formula 5
2 U. ^8 w) e9 e, r5.39.217.77In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
3 J6 B8 w- Y7 o9 R, _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.
- Q* C  j8 ^7 q% a! _9 U$ GEventually, the answer is 20 female and 80 children and no male.

alan1234

man,female,children' Z6 ]8 h1 c) i3 {5 P
0,20,80 or 5,9,86

RyanC

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 公仔箱論壇* T) X; [* i8 D8 H
11x + 5y = 100 Formula 5

. q8 [/ K2 L+ F
11X must be 0 or multiple of 5
; `9 N" n2 y0 x% Z. t& wtvb now,tvbnow,bttvbthat meanz x must be 0 or 5

manstein

86 childrenTVBNOW 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。# i: y! G! @, P( _: n/ F& k$ {
5 male
* t3 x3 v, V; a' o! ~; J公仔箱論壇9 female

dafunhei123

数学问题，线性代数，我算算再说

dafunhei123

4楼5楼的算对了。看来这里的人也很无聊，线性代数，大学的教材

ghjleo

5,9,84

leou2830

想知道耶

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答案:  男人   女人   細路仔公仔箱論壇- d) E9 _# N0 ?) @) b% f
          5        9       86

fristz

thx4sharing