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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9 S4 |7 k- \1 X2 j4 W: P( h
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) S! f1 G* o, y0 Y
1個男人搬6塊磚5.39.217.77/ x5 m8 p4 ^5 I) J6 x- t4 x9 N
1女人搬3塊磚tvb now,tvbnow,bttvb& T/ i; w: g. _! w! S% C
2個細路仔搬1塊磚
**************************************************************
問搬100塊磚5.39.217.773 L) ^, d4 B" R/ b, f* d
要幾多男人、女人同細路仔
5.39.217.77. S4 z' m6 d7 M
答案30號公佈5.39.217.77- e8 f) l$ Y6 W

[ 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
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 3TVBNOW 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。+ u; S' X+ A; l7 O5 i, H7 r
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
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
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,childrentvb now,tvbnow,bttvb5 y; Y! S" M% U% D0 h3 \
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 $ y _, z/ R1 g- m# v8 i/ u* n B
11x + 5y = 100 Formula 5

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

作者: manstein 時間: 2007-10-15 08:28 PM

86 childrentvb now,tvbnow,bttvb8 v1 M/ j# M/ b0 S
5 male tvb now,tvbnow,bttvb6 b; }6 @! F6 \
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2 T6 y8 X/ @* w2 E! M
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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