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標題: [IQ題] [數學題]100人搬100塊磚 [打印本頁]

作者: 1/5 時間: 2007-10-13 05:08 PM 標題: [數學題]100人搬100塊磚

100人搬100塊磚
規則tvb now,tvbnow,bttvb2 c9 f* }* }5 P+ P/ x- w
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5.39.217.773 ]' \0 s# P- k7 V
1個男人搬6塊磚5.39.217.777 h! P3 P: c" y
1女人搬3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。7 r3 ~; {/ j% v6 N" B
2個細路仔搬1塊磚
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問搬100塊磚
要幾多男人、女人同細路仔" ^1 I$ G7 m$ Y( A* t5 U
5.39.217.778 \9 {+ Z6 z" u4 Q0 N
答案30號公佈

[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

作者: twinsdragon 時間: 2007-10-13 05:40 PM

That is a very simple mathematics question.
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。9 v3 t4 c* h. d1 j( z' ?
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb8 P5 V6 T# \4 _8 @ k2 w
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb; y" W2 ?% z: K5 W! Q7 Y
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公仔箱論壇9 N6 p3 r# J$ ]# e
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.
Eventually, the answer is 20 female and 80 children and no male.

作者: alan1234 時間: 2007-10-14 12:19 AM 標題: two answers

man,female,children5.39.217.771 E+ Y. N" f0 ]: Q
0,20,80 or 5,9,86

作者: RyanC 時間: 2007-10-14 10:46 PM

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表公仔箱論壇+ ^' k' t0 Y8 w( w# W4 [. q- j8 _
11x + 5y = 100 Formula 5

5.39.217.77- w4 C) P3 A( e# G
11X must be 0 or multiple of 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。7 H8 ~) u" @) c4 _, c
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children
5 male
9 female

作者: dafunhei123 時間: 2007-10-15 10:39 PM

数学问题，线性代数，我算算再说

作者: dafunhei123 時間: 2007-10-15 10:47 PM

4楼5楼的算对了。看来这里的人也很无聊，线性代数，大学的教材

作者: ghjleo 時間: 2007-10-17 04:23 PM

5,9,84

作者: leou2830 時間: 2007-10-20 10:21 AM

想知道耶

作者: 1/5 時間: 2007-10-30 01:02 AM

答案: 男人女人細路仔公仔箱論壇! r# P/ H0 T$ X: S0 T( O' d- m) |/ D
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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