100人搬100塊磚 : r7 w; h7 X" W( i, p. o9 vtvb now,tvbnow,bttvb規則 3 I$ J/ v, _( D2 M1 @) N只何用100人搬100塊磚,不能多也不能小...) y5 I0 O9 _, |9 o
100人當中有男人、女人同細路仔 : [1 z C) X% s2 L* u0 U1個男人搬6塊磚 : }" I: j5 i/ U. _tvb now,tvbnow,bttvb1女人搬3塊磚 4 [0 c5 p8 |; v% G$ i7 S公仔箱論壇2個細路仔搬1塊磚tvb now,tvbnow,bttvb' V \4 V" c0 v1 m i8 p
************************************************************** 7 @3 k! k: p+ z% g- Wtvb now,tvbnow,bttvb問搬100塊磚公仔箱論壇& V+ f# I/ F3 s+ P9 f2 v; {
要幾多男人、女人同細路仔公仔箱論壇" B4 d$ }1 p3 o f
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答案30號公佈 + X& D- x: O2 G) j/ L2 V! OTVBNOW 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。2 u: t" X, n: Z
[ 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. 6 H; v- k+ C: O) Y& e+ [Let x = Male, y = Female, z = Child公仔箱論壇( k! l: w5 w- \, B, z' _# L3 w; |
6x + 3y + z/2 = 100 Formula 1公仔箱論壇. h& Y$ F I/ Z. i
x + y + z = 100 Formula 25.39.217.77:88980 j7 N# Q/ Q( P* w
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 E0 V2 W2 k6 J& p. p0 O8 d, N- {, f5.39.217.77:8898Sub 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。7 U5 S3 N4 P X% g; W+ o
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb" E6 P4 Y( s. }
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. d& Z- c: Z& V# v. k* T: pAnd 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7 }) B8 j6 p0 L. ]$ |& [; p( B. b
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 # X0 ]7 c! }+ P' P- Q* N0,20,80 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 m. E5 C4 F. P2 ~11x + 5y = 100 Formula 5
1 v, `% } H- Z1 OTVBNOW 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。11X must be 0 or multiple of 5 : x0 }) U ^4 b9 X- n4 z0 }that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
