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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- R1 T/ P/ m2 R8 S
規則
只何用100人搬100塊磚,不能多也不能小...
100人當中有男人、女人同細路仔公仔箱論壇9 r. N: g8 B+ ?
1個男人搬6塊磚tvb now,tvbnow,bttvb1 ?' X2 Q! g9 w$ |1 Y
1女人搬3塊磚
2個細路仔搬1塊磚公仔箱論壇+ N* H6 X5 u9 m: Y. \9 x9 y
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問搬100塊磚
要幾多男人、女人同細路仔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。! Z: Y# f' i' D, {0 `* \4 v
公仔箱論壇) k1 u( ^2 B, n( S/ @' T
答案30號公佈os.tvboxnow.com$ ?5 e" L. T ? f: N6 V+ T! C: ~

[ 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. R/ p6 T* f" O% {/ a
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2os.tvboxnow.com1 }( t8 _. Q( N0 N
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb4 u2 G- d$ I# `2 m* C
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 5/ s) h4 M4 s( u+ I0 V7 G% A
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇# d. a! @) o& [$ p. x
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.os.tvboxnow.com0 z* j4 S$ i7 B! X" Q. o
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,children+ M9 H( Y k- `% f' `
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 os.tvboxnow.com; p9 O, i8 y$ _4 U* l; V
11x + 5y = 100 Formula 5

tvb now,tvbnow,bttvb1 G: L( P8 h% R' V
11X must be 0 or multiple of 5公仔箱論壇% f% f/ k+ w5 _& L' v4 ]
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children公仔箱論壇# X9 @1 L+ m* h
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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