1. 1st divide to half take the heavier out7 ^1 L7 a, M* u9 C6 U4 C) ~: b
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) 7 j& Q9 b! O7 f5 G/ w5 {# J' Ftvb now,tvbnow,bttvb3. Same method if is not equal on 2nd try.