1. 1st divide to half take the heavier out 5 q: w* c2 a! J3 K& ]. o1 x5.39.217.77:88982. 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)公仔箱論壇4 ^0 U! ]* Y. e: u$ {+ E1 w7 w2 b& x
3. Same method if is not equal on 2nd try.