[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5.39.217.761 k/ T/ H6 i! _7 p, ` B3 z
只何用100人搬100塊磚,不能多也不能小...5 C7 ?4 _6 o, C: n
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. N3 u6 P' k, Z/ o9 u
2個細路仔搬1塊磚) t3 n1 g0 l6 }9 G5 F5 X
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問搬100塊磚
要幾多男人、女人同細路仔公仔箱論壇1 ~0 K7 [4 a" s2 q. N( x* Q2 i, ?+ z

答案30號公佈tvb now,tvbnow,bttvb1 b8 a+ Y) E, j" w# h, u
5.39.217.768 \1 A& R3 I& ]6 U8 n
[ 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 = Childtvb now,tvbnow,bttvb; V$ ?3 d: \$ z" j. n. B
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb" y! [' t0 Y; J9 x" I% [; D
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb, i. G8 T' U5 F2 y5 v2 `! {" T
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。; A2 }( E0 n- @$ |$ q
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇) [( b p3 s a4 {2 o! c0 @+ ^
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇2 [: K g" M% J2 N+ ]7 H0 i) n
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." y. m2 W0 V& G( T
Eventually, the answer is 20 female and 80 children and no male.

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alan1234