1. 1st divide to half take the heavier out公仔箱論壇6 G4 A) W& ^0 z% |
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) S: F8 F& U' [* c+ _% K
3. Same method if is not equal on 2nd try.