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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。" }( d. p1 Q5 r/ d3 V3 ~% w0 C
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
1個男人搬6塊磚5.39.217.76: A* Q8 X1 Q2 W
1女人搬3塊磚tvb now,tvbnow,bttvb; j' R% s# `- Z' W1 Y: m/ I8 U
2個細路仔搬1塊磚7 @; I; N! U3 q: ~
************************************************************** \! x M! G4 g
問搬100塊磚
要幾多男人、女人同細路仔
公仔箱論壇; y1 d! C! X* p( ?/ m3 M( A& Y" B
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.5 U k x$ }' K( A" w( I. d
Let x = Male, y = Female, z = Child( P6 V& _1 r7 G. ~! E
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2% v6 y a: N5 k" l
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* e+ d( I# `- p/ w- Q
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb6 y; W* R! B5 \& e$ z1 n
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 = 80.9 S- {+ e) [+ j
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,childrentvb now,tvbnow,bttvb, c! d# a j$ }. `3 T0 @
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 tvb now,tvbnow,bttvb* U( x+ y+ K. a e: x" u
11x + 5y = 100 Formula 5

# v$ ?7 r5 [- U5 i5 s: v3 z
11X must be 0 or multiple of 55.39.217.76! k; d! i2 k1 L0 a1 W4 X
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children5.39.217.76& X' |$ J& x, h4 H7 V; a# m# a) Q
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。0 G4 Z0 t9 T, J# E# ~
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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