Divide 3 groups first.
5 Z3 K5 C4 r& wi.e. 4 x 4 x 4.1 | G n+ H* M9 H
Weight any 2 groups [1st]
( B7 f; f$ j* @. n8 ^then you will know the heavier ball in which group.公仔箱論壇. J% }! q& Q; X
Weight any 2 balls in that group [2nd]
* t, B: y# G4 j6 m Z( b5.39.217.77:8898then you will know the heavier ball in which 2 balls.
; e5 W% }1 t4 m- d, d2 k$ a9 v公仔箱論壇Repeat again in remainders [3rd]tvb now,tvbnow,bttvb' t- P- J. ?' `
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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