100人搬100塊磚5.39.217.77/ _ d/ T. J7 o5 d
規則公仔箱論壇( D! S5 H* U7 j+ @# K" w4 g
只何用100人搬100塊磚,不能多也不能小... 0 G, a& s7 ?* w9 c0 e公仔箱論壇100人當中有男人、女人同細路仔公仔箱論壇/ r, m* t3 t* D6 D# x* ]
1個男人搬6塊磚 1 ~9 e8 [! x2 Q9 a. ltvb now,tvbnow,bttvb1女人搬3塊磚 % W n. t4 S8 J/ G& q4 NTVBNOW 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。2個細路仔搬1塊磚公仔箱論壇8 Z/ K, C, Q! f8 S3 m
************************************************************** # L) L5 A' g/ f8 @+ R1 j2 J5.39.217.77問搬100塊磚5.39.217.779 _" J" t+ M! S
要幾多男人、女人同細路仔 : d/ f$ w1 v" {8 \6 i i2 Z & {6 P2 n8 `+ Z, G( ]' e答案30號公佈6 a; }. Q) z# d; E9 X% \
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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.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。. C& L {; P9 C9 w" G7 m) e: g% I% M
Let x = Male, y = Female, z = Child5.39.217.77 S9 q. l* M$ e
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb' h) K) W' @: j, h
x + y + z = 100 Formula 2# @3 n7 w8 n0 M$ C& [, f
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 # v0 b; P/ o) jSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 : \5 [5 ]5 M# K9 Utvb now,tvbnow,bttvbFormula 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。; }" S; W% Z" i1 L# \
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. : Q3 h- r5 o8 F% P, U* n公仔箱論壇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.公仔箱論壇6 N2 o$ T) s% a& |
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
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 % v/ K( m4 [5 f1 m; k0 n: jTVBNOW 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。11x + 5y = 100 Formula 5
5 M$ S1 j4 i" D8 _! S. C' K( T& itvb now,tvbnow,bttvb11X must be 0 or multiple of 5公仔箱論壇9 a0 V9 S* ?9 z
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 5 n4 [2 H/ f7 STVBNOW 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。5 male 1 l* B# p7 \5 p; B. i9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM