1. 1st divide to half take the heavier out 7 U' z# h& q }8 S0 htvb now,tvbnow,bttvb2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for) ; c6 ~/ p$ D4 _) e" T2 l公仔箱論壇3. Same method if is not equal on 2nd try.
發表於 2011-11-1 01:28 PM
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