100人搬100塊磚 7 G& d/ }% }& t- L% n: F% u; Ntvb now,tvbnow,bttvb規則 e* Z" Z4 `9 `) w- Utvb now,tvbnow,bttvb只何用100人搬100塊磚,不能多也不能小...公仔箱論壇- [) N8 k" l' p: Y1 z% p
100人當中有男人、女人同細路仔5.39.217.76* k( M, {$ ` e+ ^4 y) ]
1個男人搬6塊磚 ; R& M9 b1 q- H8 u" p, bTVBNOW 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女人搬3塊磚 - z/ ~2 z6 _" Y5 f公仔箱論壇2個細路仔搬1塊磚5.39.217.76# @ Y9 \7 U3 k
************************************************************** ; L Y1 `# q2 e+ j9 |tvb now,tvbnow,bttvb問搬100塊磚4 V" d% j M2 v
要幾多男人、女人同細路仔 ( c, g( E* d' Y1 f. d/ z 9 K2 ^4 o2 R \6 o% A8 d" }9 L公仔箱論壇答案30號公佈 ( f' i6 t: q, [) s! v5.39.217.765 o$ o# k- P, D
[ 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. 9 R) ^0 E8 K$ _/ m; w3 n' V9 RLet x = Male, y = Female, z = Child $ N) B: w# \& j3 H/ X' U公仔箱論壇6x + 3y + z/2 = 100 Formula 1公仔箱論壇1 |* V# s* P l0 ?& J: l7 l/ u
x + y + z = 100 Formula 25.39.217.760 Y( ]- _: i/ s. I0 y
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb, y: j/ f$ G8 v! B8 p4 K
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.76+ i: G8 Y- O& E( p
Formula 4 can change into 11x + 5y = 100 Formula 5 # H2 z1 y! _% R7 R% s公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 6 B+ U. a' h" R- b5 m& G C9 T/ F5.39.217.76And 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) o, }5 K. ~/ k$ r' X
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
7 @6 R8 V/ N+ {# `$ Q5 rtvb now,tvbnow,bttvb11X must be 0 or multiple of 5- g7 o* f& @) \% y+ h
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。7 \$ k% C R. y# s1 Z4 T4 V+ f( V+ g" h
5 male $ a" d1 Y' {7 {/ I( u3 Z7 Z( r9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM