100人搬100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。/ ?$ Y8 n2 j0 K' n9 q0 Z
規則7 i2 k! `( p! [0 \+ z( v9 c$ {
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb6 j6 v6 v; F/ q6 `& l
100人當中有男人、女人同細路仔 : v! ]& d m6 K+ ] Utvb now,tvbnow,bttvb1個男人搬6塊磚 0 I' Y% T' e6 ]& M" ^6 ztvb now,tvbnow,bttvb1女人搬3塊磚 ' D3 T+ t; p5 i7 }2個細路仔搬1塊磚5 a% w; }/ `, i" B
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問搬100塊磚5.39.217.76% N: S' m; B$ A: J% }* q, N
要幾多男人、女人同細路仔( R/ `; S/ G# Z
2 P- t# W U+ g) u% {- Z
答案30號公佈 % d3 T! {& _% |! F8 T) I) P4 K& o3 _7 Z( Y! }
[ 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. 3 B/ v E* b2 ?( b; Y$ u. X* E+ ~1 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。Let x = Male, y = Female, z = Child # { y. I4 Q) N+ T B4 [7 o6x + 3y + z/2 = 100 Formula 1 : R0 g, Z! t! ^* @x + y + z = 100 Formula 2. i/ y; v1 j: X, a
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 ]+ y% A6 S5 E/ ?0 m( a8 b# }Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。+ a: X* F3 `) y- I6 }' h5 ^ f. F' y
Formula 4 can change into 11x + 5y = 100 Formula 5 % `3 U! P s; D/ p6 I% XIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. & p) W' p( s v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 = 80.6 n& n' q( T2 h% w9 @
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
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0,20,80 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 8 _ \/ z- N9 K9 B) e. n公仔箱論壇11x + 5y = 100 Formula 5
tvb now,tvbnow,bttvb4 s# } b+ m7 a3 j
11X must be 0 or multiple of 5tvb now,tvbnow,bttvb, Z, J! v! K/ h# `3 v
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
