100人搬100塊磚 5 {! }& Z' @1 j% U- [規則 ' S6 V0 f$ u' z7 `6 q m只何用100人搬100塊磚,不能多也不能小...公仔箱論壇9 A2 ~$ |+ X$ Z
100人當中有男人、女人同細路仔公仔箱論壇) j8 n) V7 I. I1 w) M8 Q( D
1個男人搬6塊磚 ' D6 n# n1 ~6 g) v公仔箱論壇1女人搬3塊磚 2 M$ U5 L6 j8 ]2個細路仔搬1塊磚! }( t( P) f, A
**************************************************************tvb now,tvbnow,bttvb" R5 U W: E+ J- M- X8 l( r. R" C
問搬100塊磚' a1 i" D4 j4 d9 G! c2 f
要幾多男人、女人同細路仔 9 Q! f/ I7 n4 P. _3 G# S FTVBNOW 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。) Q; G8 l# J- m
答案30號公佈 # b' ]) V( A0 x8 g: M9 s5.39.217.76 ' s5 p1 [! e/ j2 n3 M8 v; n C公仔箱論壇[ 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.5.39.217.76: V* j, l9 M# o* P. a- N
Let x = Male, y = Female, z = Child % F4 E9 x5 W# T- z% Y! O6x + 3y + z/2 = 100 Formula 15 D: J3 D; A) X; S h9 j
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb7 T4 m) h% U$ ?2 l
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 % @/ U7 {) }5 h* F2 `tvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 ! G4 o2 M$ Y9 t2 q1 F& }tvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 5 , r$ g4 A" f7 y$ S' T公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.+ d! T& h1 _% ?) m. P7 B# H
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。# p4 Q% F! W/ [3 {
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- {! f% ^) W. O9 T( D& Z/ B
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
