[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
規則; V4 V2 v( L' d) A# f
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb- X; X3 c( Z- A9 u9 a
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5.39.217.767 z$ r* D* u* y0 L7 o+ ]: X6 t
2個細路仔搬1塊磚/ m1 G' ]( Q; m9 E# a$ D! |
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問搬100塊磚5.39.217.76! g( }' Z. e, }4 v, O- `
要幾多男人、女人同細路仔tvb now,tvbnow,bttvb/ D- U% S- {- A& y+ m6 j
tvb now,tvbnow,bttvb1 H) ~' \% i& y1 E. c D
答案30號公佈公仔箱論壇. S& M$ E q0 W2 r! h
5.39.217.76; |6 L4 P* k: a7 \3 o( J0 P
[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

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twinsdragon

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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
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 5TVBNOW 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。, E* v) S5 e9 N1 L5 X6 a& E# B. N# z
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb& a2 Y C+ R$ S
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.

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alan1234