1. 1st divide to half take the heavier out & y1 y. O8 l# atvboxnow.com2. 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+ A& Y% x* s* R+ c
3. Same method if is not equal on 2nd try.