Divide 3 groups first.& Z7 N& s* r8 k, \8 ~. J% c
i.e. 4 x 4 x 4.0 O5 U) L% [# \( e% l% ~
Weight any 2 groups [1st] h& t/ ]) h+ v- G! G! s
then you will know the heavier ball in which group.
" R4 }, v) u' v+ G8 D- W7 z" p公仔箱論壇Weight any 2 balls in that group [2nd]
9 D/ w) k( j* f7 kwww.tvboxnow.comthen you will know the heavier ball in which 2 balls.
' H2 Q* \1 ~# d% H' mRepeat again in remainders [3rd]
& q/ E! Q: k% ~3 Z公仔箱論壇Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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