1. 1st divide to half take the heavier out , S- `( G0 |+ F0 o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) - _: o( e' q g( D) }公仔箱論壇3. Same method if is not equal on 2nd try.