1. 1st divide to half take the heavier outwww3.tvboxnow.com' D6 S J1 d) _5 d$ f K& J
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; }, A, z* B3 J
3. Same method if is not equal on 2nd try.