There is 12 balls.. divide them into piles of 4
1 w+ O/ s! H$ ]* R% R; [9 Gso 3 groups for 4..name is A,B,C公仔箱論壇4 w& W0 m' i1 t( E
case 1:
u% L C: S3 U/ y* X+ s k. ]公仔箱論壇measure A -- B www3.tvboxnow.com, T! M s# N R' F. h' |
A or B is heavier
$ B9 K* K2 P: b% g: L- Edivide that group into 2 by 2
0 p7 P# U# K( ?" @! u( z" fthen divide heavier group into 1 by 1
- R" t1 B; h2 t% f$ jtvb now,tvbnow,bttvb公仔箱論壇0 S8 f0 d. B {* x
case 2:& W7 h& O! Z3 e, I) I, T7 ~
A and B is the same.. therefore C has the heavier ball
) n' L$ K) {- s% R0 S9 b+ [tvb now,tvbnow,bttvbdivide C into 2 by 2www3.tvboxnow.com& L/ K3 \! s1 K( R! { V2 _
then divide heavier group into 1 by 1..
; @& P% X, Y7 v# I8 L- Mtvb now,tvbnow,bttvb: Z" A7 v" x$ x9 _, c4 D+ N* r% q
got it in 30 seconds.. not so hard -.-' |
發表於 2006-12-8 01:06 PM
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