100人搬100塊磚 4 i% A: e- O' v, f4 p% p規則 : X! ]6 v. z3 q( @; Y+ y1 k+ [, D. ~tvb now,tvbnow,bttvb只何用100人搬100塊磚,不能多也不能小... * J# }# S) d: T8 F5.39.217.76100人當中有男人、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。0 F# S0 z! B( t2 Q
1個男人搬6塊磚 ' E+ U/ d6 h) a# u7 s公仔箱論壇1女人搬3塊磚5.39.217.761 u' E. D" ?( }1 Y3 L6 t
2個細路仔搬1塊磚 ; _9 }0 }% q; M; n, etvb now,tvbnow,bttvb**************************************************************8 L# f/ f6 S' K0 A; L
問搬100塊磚tvb now,tvbnow,bttvb4 y$ ^9 c8 E2 d7 N' u, M
要幾多男人、女人同細路仔 ; c- [/ b" `' d 1 K- e7 Q2 i- l9 ^" h. `5 V1 T6 U6 M答案30號公佈 ( E) ` ]4 c1 y3 }& r! Y" T$ t C# Z) R7 K" F4 h" i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. : Y: D3 R# x+ O+ X# Q: W6 z1 Y* C, qLet x = Male, y = Female, z = Child 3 m$ O* ]1 `1 j7 M+ c1 d+ o2 v, B公仔箱論壇6x + 3y + z/2 = 100 Formula 1 M% I; N; f. ^/ c! X
x + y + z = 100 Formula 2 4 h1 D" e8 y ?; c h- b0 v! KSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 6 i$ U k% K0 E! r- y公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 . ^: j8 r P+ f% r; R" R公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb1 i( ]! e- e+ o, {8 |
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. + `& j* x3 {1 L9 o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." E3 s& ~# A3 C# a; O
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 * ?/ V; b) S8 O% Ttvb now,tvbnow,bttvb0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 # p4 m7 s$ q, U* F8 O
11x + 5y = 100 Formula 5
tvb now,tvbnow,bttvb( A( z6 J7 R1 v+ ~% O$ u: b! T
11X must be 0 or multiple of 5) W) f1 t/ D# s5 b2 A& J' s& W
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrenTVBNOW 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。6 {$ }( s. ?# m# q# r% t6 J
5 male 8 @3 v! M I! I4 k% gtvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
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