100人搬100塊磚tvb now,tvbnow,bttvb- c* j, d: _! {( p
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只何用100人搬100塊磚,不能多也不能小...0 b8 X& g% O/ }/ @* ]8 I
100人當中有男人、女人同細路仔 ) A9 T6 O7 S0 s3 J. k4 y7 d+ g公仔箱論壇1個男人搬6塊磚tvb now,tvbnow,bttvb* \) G1 F% x: y6 p( [; K1 d
1女人搬3塊磚 ( b5 x N% O( b; q# ~, W% N2個細路仔搬1塊磚 " F8 C# y% H% c1 N Z3 aTVBNOW 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。**************************************************************公仔箱論壇4 n. f/ @" O3 d# Z) d& m& c
問搬100塊磚 2 w2 j- e. o( G/ H I& ]/ Y9 C5 Btvb now,tvbnow,bttvb要幾多男人、女人同細路仔8 h8 M7 _+ C0 k1 [$ z" L
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答案30號公佈tvb now,tvbnow,bttvb. A4 A! w/ E9 z3 p6 N
5.39.217.76/ z, G. c ]8 C! j4 h/ O# J
[ 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。, J# v. Y4 c3 ~4 j2 s9 L
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb* U9 p/ p7 q% s8 @" y' k, z
6x + 3y + z/2 = 100 Formula 1 - F( F! P7 d& x! \. Sx + y + z = 100 Formula 29 q# K3 k% ?9 w% \$ p% U
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76) b1 ]3 V. K: S/ K% c7 a; x" a2 n
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 - v" d5 h d3 ^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。Formula 4 can change into 11x + 5y = 100 Formula 5 & Z- ]) X( f$ p! {, E) KIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 0 |& E. q( i' G6 z2 z0 {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.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。* F- J/ m, E, q1 ^) Q% I4 D) _! [6 N
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
