1. 1st divide to half take the heavier out9 ?0 I" s5 N+ @3 t$ Z1 F
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) 0 v2 J6 Q8 f1 j1 k6 e3. Same method if is not equal on 2nd try.