Divide 3 groups first.
( S, _4 C; g& b6 r% }$ h1 y公仔箱論壇i.e. 4 x 4 x 4.
5 w# d2 B& _5 `tvb now,tvbnow,bttvbWeight any 2 groups [1st]
& t; k# {% m, f/ b% i9 |公仔箱論壇then you will know the heavier ball in which group.. b# G2 j$ t: V. A+ Y
Weight any 2 balls in that group [2nd]公仔箱論壇/ N' X+ W; X$ F) \- k( y
then you will know the heavier ball in which 2 balls.. q9 i- Q) D! \! u
Repeat again in remainders [3rd]9 V# O3 N1 e# c& V% U4 Z" ~# M) X; z
Got the heavier ball. |
發表於 2009-7-2 12:48 PM
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