100人搬100塊磚 ( p1 u1 ?& R: ]2 B5.39.217.77規則 6 z' M9 a) b ^, F- S* oTVBNOW 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。只何用100人搬100塊磚,不能多也不能小...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。( b7 _$ W8 Z5 W7 j7 T# X
100人當中有男人、女人同細路仔 7 G t. N; B' ?1個男人搬6塊磚 ) U+ Y0 Y4 D$ ]8 e# O2 y3 tTVBNOW 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。1女人搬3塊磚tvb now,tvbnow,bttvb' k5 c* w: c2 d, V
2個細路仔搬1塊磚) W/ z+ }& r8 V8 o/ E
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問搬100塊磚 k* }0 p4 P. I0 h9 X7 H$ p0 R5.39.217.77要幾多男人、女人同細路仔 % d. A% T: F! U; Z4 K$ `7 E, s; N + i! U! x0 ?/ d& g% B答案30號公佈tvb now,tvbnow,bttvb( R V u9 o) o: a6 V
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[ 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. 4 O$ a# D& h$ `) j# ]; f# d8 L5.39.217.77Let x = Male, y = Female, z = Child, S( d; h$ Z. y" j) r# Z- B1 U
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb7 h& V7 v6 q& U. v
x + y + z = 100 Formula 2 + q7 o) z- n( e$ Z# ^4 ytvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.774 \- K, W- y/ }1 {- D+ F
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 6 _6 l- S3 s y! L公仔箱論壇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。" C* U7 B2 Y) X& s7 u' |
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇3 }" Z% D) R3 u# F2 @! G
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. . C" g0 P+ s) v- Q2 qEventually, 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
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0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
& _) ?& M/ ~ m. _+ P) v5.39.217.7711X must be 0 or multiple of 5 8 ?" H0 Z5 C. m0 m! R* N: O公仔箱論壇that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
