100人搬100塊磚1 [# s5 p; X' o7 M* y
規則 9 r1 [4 N8 {% ?- p% }6 A5.39.217.76只何用100人搬100塊磚,不能多也不能小... % e7 f/ I( K" d) ^# w, 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。100人當中有男人、女人同細路仔9 b( X2 K9 n- B- k) [ P. ~
1個男人搬6塊磚 % I% [1 t( r! j1 b( X# Y5 M# V1女人搬3塊磚tvb now,tvbnow,bttvb9 B& y f; g- }* b7 I, i n
2個細路仔搬1塊磚 8 Y9 {+ s+ o1 m% m9 U公仔箱論壇************************************************************** . S7 r! A# q' X9 Y+ n5 u2 [問搬100塊磚6 U/ @3 H3 W& [( f2 u/ h
要幾多男人、女人同細路仔 : U; ^/ m" m. x6 l+ r Z5 ` 8 O6 n; U L7 D X+ Q; b9 t公仔箱論壇答案30號公佈2 v8 s S, W( o& o1 f
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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.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。$ e1 M1 v: g3 F% M( [! p
Let x = Male, y = Female, z = Child 8 f2 K0 ^; R$ G" x5.39.217.766x + 3y + z/2 = 100 Formula 1 : C5 m. I( ]4 y: v# U( `x + y + z = 100 Formula 2 9 ?5 N( P8 n4 E* O9 ]9 sSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 ( Q) C5 n5 U# D7 A: m) g2 r7 M5.39.217.76Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 46 K T" M$ G4 b6 N7 z# l, H
Formula 4 can change into 11x + 5y = 100 Formula 5TVBNOW 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 J9 K" ?/ e5 S' g& A( \
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇2 Q$ h$ \0 W: K" [3 c. y/ I5 H
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.公仔箱論壇9 D3 `# o y' `! ^2 a6 k" 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
man,female,children5.39.217.76& n4 c1 w3 t+ P5 a
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 公仔箱論壇( S+ i( c6 J. j; S U4 I
11x + 5y = 100 Formula 5
5.39.217.76/ ^9 n" W7 J# ]- E7 Z- g7 P
11X must be 0 or multiple of 5tvb now,tvbnow,bttvb& W+ Z# p ^6 w; G
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
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