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標題: [IQ題] [數學題]100人搬100塊磚 [打印本頁]

作者: 1/5 時間: 2007-10-13 05:08 PM 標題: [數學題]100人搬100塊磚

100人搬100塊磚& X; r+ T7 X) V* v; K
規則tvb now,tvbnow,bttvb' C. W; |5 G* m) M
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
1個男人搬6塊磚7 t( }1 p+ J G$ S) t& S$ B
1女人搬3塊磚
2個細路仔搬1塊磚公仔箱論壇) P" E" o0 q( S, r
**************************************************************公仔箱論壇* X2 i# D5 c3 P9 c ~
問搬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。' \+ f- {1 A; f3 u5 O5 m5 V
要幾多男人、女人同細路仔5.39.217.763 _, E( q! E. ]* _5 r) Q& G
1 t8 w+ w' s% Z& [- y
答案30號公佈tvb now,tvbnow,bttvb: z: t# P; c3 h/ \3 B2 g- @

[ 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.
Let x = Male, y = Female, z = Child: H8 Z, Y# y- b# l
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇3 M. i& M$ H5 E
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 5tvb now,tvbnow,bttvb! Q8 P1 S3 E1 g0 y
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.76. E0 }$ `5 R8 F
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.
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,children5 _* g2 ~$ l" {0 w
0,20,80 or 5,9,86

作者: RyanC 時間: 2007-10-14 10:46 PM

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表
2 I/ m- h7 @; d' P9 \) c11x + 5y = 100 Formula 5

% f' U. R( o* F: }
11X must be 0 or multiple of 55.39.217.76! J5 ]: _3 m b5 j7 ?
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children
5 male
9 female

作者: dafunhei123 時間: 2007-10-15 10:39 PM

数学问题，线性代数，我算算再说

作者: dafunhei123 時間: 2007-10-15 10:47 PM

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

作者: ghjleo 時間: 2007-10-17 04:23 PM

5,9,84

作者: leou2830 時間: 2007-10-20 10:21 AM

想知道耶

作者: 1/5 時間: 2007-10-30 01:02 AM

答案: 男人女人細路仔
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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