[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。0 @6 K* D: Y E
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只何用100人搬100塊磚,不能多也不能小...5.39.217.76+ ~" v2 p! e3 }3 {( W8 R6 x
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8 R& T0 e+ b& v" W5 A$ ]0 U1 p
2個細路仔搬1塊磚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: |' s5 K+ `! B0 Q' T+ g( I1 D
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問搬100塊磚, X9 Y( x0 m1 E. a9 q
要幾多男人、女人同細路仔tvb now,tvbnow,bttvb: q: J8 t6 S/ ^% _. v5 F8 v
$ ^# M" ], d: t9 e, B7 r" H
答案30號公佈公仔箱論壇- ?/ o+ I( }- ~' {) J0 J" m+ r
$ l. A; b2 v5 y* O( v: X" P: u
[ 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.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。( C* S$ Z5 ]; b7 U
Let x = Male, y = Female, z = ChildTVBNOW 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! W7 A; N" l( i {. t9 `
6x + 3y + z/2 = 100 Formula 10 X, p5 J' Y c+ O
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.764 w) m/ e* P" h% T) x; z
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb; s1 B# H' k5 D) H
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.5.39.217.76* c8 i5 i6 l" q& x; _) k
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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