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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塊磚公仔箱論壇' @7 d; K: h" W' v. B% K. |" }
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只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb) K, s0 P- F0 z* L7 x( J9 k
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塊磚公仔箱論壇 f* I- \; p, E1 {
2個細路仔搬1塊磚5.39.217.77& N2 [( G& C- o2 s6 c% u, x
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問搬100塊磚
要幾多男人、女人同細路仔

答案30號公佈
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。! z0 G+ w5 I) I3 P7 P! @% Q
[ 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 = Child
6x + 3y + z/2 = 100 Formula 15.39.217.77" z8 X$ O0 [ o$ }
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.77* V8 D+ q' J K: k1 b
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。0 u1 D0 s/ T1 _( z
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 = 80.5.39.217.774 Y- e+ Z; m, E! g/ 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( e5 N: I7 |. S0 {. h
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 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 j2 A4 k# r. Y
11x + 5y = 100 Formula 5

5.39.217.77! ~, x5 A3 o4 D, v, K
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 children
5 male 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。: a/ F+ C% T d1 O/ s4 }
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
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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