100人搬100塊磚; ^- N$ ]6 i( U* [( i+ W/ E
規則 . [7 x6 ]8 L+ t0 u q4 ZTVBNOW 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... ! b- w. [: }% o, ZTVBNOW 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。100人當中有男人、女人同細路仔) m: E/ b" d7 n
1個男人搬6塊磚 + m! M9 h/ d5 a' Z( }* jtvb now,tvbnow,bttvb1女人搬3塊磚 % ]! c" z& r$ b; D- m( x2個細路仔搬1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。3 n9 Y$ E7 y- q7 r2 G6 T" w
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問搬100塊磚 : Y7 n" t. R; O! Y1 {9 h5.39.217.76要幾多男人、女人同細路仔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。2 h3 d" t& v1 S. b& f
( W a+ F; A# V$ u3 ]tvb now,tvbnow,bttvb答案30號公佈 2 {6 n3 R/ L1 x# RTVBNOW 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 f5 g! V! o! T/ c0 N, M, R
[ 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.tvb now,tvbnow,bttvb( k0 W6 f, c9 I% n; V2 p, j
Let x = Male, y = Female, z = Child( d, X, j# @4 s, R) \
6x + 3y + z/2 = 100 Formula 1 ( r6 ?9 m! H, \公仔箱論壇x + y + z = 100 Formula 2tvb now,tvbnow,bttvb7 k; T" ?( [* V! j! S0 U# a
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76" I9 @8 g4 H- ^9 x, o* Y5 B1 t2 w) x
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4" Y# m1 \4 b0 r9 L
Formula 4 can change into 11x + 5y = 100 Formula 5) }. `% e5 v$ U z! D% A- l# x, o
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.6 @1 m' J8 n. z! g$ A% U& y/ w9 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.tvb now,tvbnow,bttvb6 \1 e6 l, ?0 T6 E
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+ |$ I) D# m5 d" w: v/ V3 E/ k y. Y& a* r
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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11X must be 0 or multiple of 55.39.217.76" q7 d2 o( O. Q% k6 u$ k h& Z
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 6 R5 E( V1 t$ |) W. r2 |) h# R2 }5 male / ?% p% a' o7 N5 U1 I) F公仔箱論壇9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
