100人搬100塊磚公仔箱論壇. I) q( E# O+ }/ B
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只何用100人搬100塊磚,不能多也不能小... 1 [7 }4 |7 e. ~' p" e& g100人當中有男人、女人同細路仔公仔箱論壇* Y2 q4 l! C1 i! L/ V$ u
1個男人搬6塊磚) O) ]1 B1 R7 S A) o4 E6 a
1女人搬3塊磚 ( R6 t8 d1 e# cTVBNOW 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個細路仔搬1塊磚5 f) P6 ?, n& `- V% z
************************************************************** . P8 ^. R# t: _( z5.39.217.76問搬100塊磚 + j. d, n" T2 T5 ?5 @* M: \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。要幾多男人、女人同細路仔 ) L* T- v! e6 R1 x U; [公仔箱論壇 + r! I* l/ s3 q5.39.217.76答案30號公佈5.39.217.76( @' W7 r9 R0 y1 \5 J, O3 K' Y/ d
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[ 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.: Z. l. N# ]. c s/ ]
Let x = Male, y = Female, z = Child 0 V6 N: Y7 f) Y6x + 3y + z/2 = 100 Formula 1 $ F0 J5 f, M) X. A5.39.217.76x + y + z = 100 Formula 2TVBNOW 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 Z3 z( o' x6 }! P& Q1 |
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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。& s) m% O e! t/ d4 L# H9 j
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4, i% ^$ h, g$ a2 Y
Formula 4 can change into 11x + 5y = 100 Formula 5, N' p# X" R9 k
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 9 M( F+ _3 E/ Y# J5.39.217.76And 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.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。; \# t- m9 q2 ]4 l" Z& m! K
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
% w a" [4 V/ O+ q% }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。11X must be 0 or multiple of 5 a. D$ l, M, g K! v公仔箱論壇that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children + [$ ~) Y3 p( ]5 t" l5.39.217.765 male " q; ~$ ]# w ^1 T3 z9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
