There is 12 balls.. divide them into piles of 4
" x. U) i5 O7 z1 c0 {! m( yTVBNOW 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。so 3 groups for 4..name is A,B,C( L6 g# ^8 x/ ^2 f1 T
case 1: , `, N Z1 L, g7 O* p" @
measure A -- B 9 N$ G$ N$ P7 u" T
A or B is heavier
1 T, m4 E+ I- pdivide that group into 2 by 2
% Q2 F" J- B1 {3 m5.39.217.77:8898then divide heavier group into 1 by 15.39.217.77:8898- k2 v9 A* O# j# t( ]
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。1 q, ]0 _2 m& b# f& _: B
case 2:
+ e, e( L6 ~- X+ W* f3 A# R: t& D5.39.217.77:8898A and B is the same.. therefore C has the heavier ball公仔箱論壇, q+ j& ~( {, `% p9 S- e8 v/ `
divide C into 2 by 2( G" M2 o0 {% j0 |9 C
then divide heavier group into 1 by 1..
0 G6 Y, Q* d7 ]0 R
* t" h$ Q& x0 U) \) {; j5.39.217.77:8898got it in 30 seconds.. not so hard -.-' |
發表於 2006-12-8 01:06 PM
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