1. 1st divide to half take the heavier out ( C$ G, b" G* e3 l, d# S3 t公仔箱論壇2. 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" b! [2 z5 _: [( g/ y
3. Same method if is not equal on 2nd try.