1. 1st divide to half take the heavier out ! c4 f7 g: U; L8 v- g* C2. 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) + T5 x {1 X8 N9 |5.39.217.763. Same method if is not equal on 2nd try.