Divide 3 groups first.tvb now,tvbnow,bttvb# S5 v2 G6 @# @$ p
i.e. 4 x 4 x 4.. ~4 E- v* R/ Z& d9 \
Weight any 2 groups [1st]tvb now,tvbnow,bttvb8 R0 W# g+ J6 }8 j
then you will know the heavier ball in which group.
, _6 v' L) }0 `tvb now,tvbnow,bttvbWeight any 2 balls in that group [2nd]
( r; O( R+ \- v: S5.39.217.77then you will know the heavier ball in which 2 balls.
$ {' _9 U! z: Y% Q1 tRepeat again in remainders [3rd]
2 v0 o2 c) n% N( n" V$ k) W9 ?0 x5.39.217.77Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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