1. 1st divide to half take the heavier out' u! }; {& {% y" F- S5 }
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) % \& u3 ~" M, l公仔箱論壇3. Same method if is not equal on 2nd try.