Divide 3 groups first.
, f! ~" G' `: Q% R/ q" A- \5 x. xtvb now,tvbnow,bttvbi.e. 4 x 4 x 4.
2 @; t! w: o1 @' PWeight any 2 groups [1st]
2 Q2 z4 V3 p- t6 I. u( V5 N2 |公仔箱論壇then you will know the heavier ball in which group.tvb now,tvbnow,bttvb) x/ C5 c% G# M! \/ E3 H
Weight any 2 balls in that group [2nd]; {2 Z; S4 X, c$ @% j
then you will know the heavier ball in which 2 balls.
+ ^1 J% N8 m+ w- V7 y% Gtvb now,tvbnow,bttvbRepeat again in remainders [3rd]tvb now,tvbnow,bttvb, m3 A* H- R9 O$ o
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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