[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,bttvb- M! D2 r( S5 L9 F- s/ ?. }9 w
規則* s8 ~0 X: Q) X- Y% q, _0 x4 q
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tvb now,tvbnow,bttvb* o0 @0 z. w+ `( P, S
1個男人搬6塊磚
1女人搬3塊磚
2個細路仔搬1塊磚tvb now,tvbnow,bttvb$ Q: t. i5 a% b' y
*************************************************************** z5 J, A. K2 l; m6 u9 n* a' N
問搬100塊磚
要幾多男人、女人同細路仔
* \1 r+ A' b9 D( y0 m' r, h% C
答案30號公佈

[ 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.: F0 y" e4 A' l" y( n+ r& N. j
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2TVBNOW 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。/ }8 M0 G; b) ?/ ^7 _0 C
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3$ ]" [- t- D1 M% {# Q8 s/ Z
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.77% |1 X W: d0 F) S& L& K
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.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。3 M! g+ ?# m- V6 o L
Eventually, the answer is 20 female and 80 children and no male.

回復引用

TOP

alan1234