1. 1st divide to half take the heavier outtvb now,tvbnow,bttvb" Y) }. q$ N) F' Q1 e) Q& R# s8 Z, v
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)公仔箱論壇6 X; Z+ y0 [/ q# d9 V
3. Same method if is not equal on 2nd try.