Divide 3 groups first.
8 R9 m8 x+ v0 l, f- X! x6 yi.e. 4 x 4 x 4./ E2 I, |$ W3 }' w l1 v% ^$ h
Weight any 2 groups [1st]
! o) w6 i9 Z' E* V( e: gthen you will know the heavier ball in which group.3 h" w) }& Q; `+ c; F2 B
Weight any 2 balls in that group [2nd]3 }- Z+ f9 C! Z! d; I7 X
then you will know the heavier ball in which 2 balls.
3 n8 m& L# O3 I; z5 s1 Y; PRepeat again in remainders [3rd]tvb now,tvbnow,bttvb- z* m' s* [" ?) D; x
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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