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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" x0 ]1 k. x+ v5 ]# l
規則
只何用100人搬100塊磚,不能多也不能小...5.39.217.764 F, I% `3 N" f$ |" u+ y( Y
100人當中有男人、女人同細路仔公仔箱論壇6 J. x% A; v. F7 ]4 p& K7 [( ~' R
1個男人搬6塊磚
1女人搬3塊磚tvb now,tvbnow,bttvb% E, P' v; ^6 o& q! n+ F
2個細路仔搬1塊磚
**************************************************************
問搬100塊磚& q1 B k+ P4 Q3 Y$ Y6 u
要幾多男人、女人同細路仔
tvb now,tvbnow,bttvb' J) w1 H+ F1 d/ Z+ d$ W8 a' D
答案30號公佈/ I8 z I8 O5 j

[ 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.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。' l1 W/ w. t8 y( R& B% ^* e* Y
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 5公仔箱論壇$ `9 p" X! H/ h' x* a# S( L
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. z! |8 _& |; S/ d$ l
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,children公仔箱論壇3 H$ V& C( p& V/ f
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
11x + 5y = 100 Formula 5

( [3 [, a1 J2 ]
11X must be 0 or multiple of 5
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children5.39.217.76! _9 s" z1 m8 {" L. e
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 I4 `. w5 K0 Q& ]- q& j
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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