[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tvb now,tvbnow,bttvb3 `0 r1 i& V: W
規則) x$ P( {* R; ?! \- V ^8 r
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
1女人搬3塊磚
2個細路仔搬1塊磚+ r# d) Y: k3 J1 z8 {
**************************************************************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。- U* Y. E$ u+ m' |7 ^8 T
問搬100塊磚tvb now,tvbnow,bttvb5 Q! `, d# g" E6 _) H
要幾多男人、女人同細路仔4 _- D( _4 f# R9 U8 {" k: w

答案30號公佈
+ s) j& ]5 t0 |' {1 [
[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

收藏分享評分

回復引用

訂閱 TOP

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
6x + 3y + z/2 = 100 Formula 1, n9 B, f2 g2 K3 Y
x + y + z = 100 Formula 2
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 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.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。- S! O( b8 D c
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.

回復引用

TOP

alan1234