There is 12 balls.. divide them into piles of 4
6 l: S% P3 T7 f; ~$ S9 f1 m, Kso 3 groups for 4..name is A,B,Ctvb now,tvbnow,bttvb3 ^" s, i7 l; T6 t) a
case 1:
% Z$ r r9 V! M7 T, Y' j" q5.39.217.77:8898measure A -- B
1 ~: Z( u e6 d. d( \: {A or B is heavier 5.39.217.77:88986 h0 [! ?% a' h. S4 s: h% [0 V
divide that group into 2 by 2
: w8 Z4 U2 {1 ^6 ?4 ptvb now,tvbnow,bttvbthen divide heavier group into 1 by 1
1 x! f5 E9 P: }. O$ {. {0 rtvb now,tvbnow,bttvb公仔箱論壇$ \ A2 U, U# j& x
case 2:
- O5 V$ W9 G/ S+ yA and B is the same.. therefore C has the heavier ball
: @ b" u2 m4 m$ Z1 P5.39.217.77:8898divide C into 2 by 2: g; O. u {: C& M
then divide heavier group into 1 by 1..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。% D7 M6 z0 j3 Q+ P( D: f4 O; l+ L" y
' Y* e8 g y' s$ X8 c# p1 MTVBNOW 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。got it in 30 seconds.. not so hard -.-' |
發表於 2006-12-8 01:06 PM
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