1. 1st divide to half take the heavier outtvb now,tvbnow,bttvb; d2 t2 y0 e- g9 q2 W
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+ U, ^" Y9 V1 e& n
3. Same method if is not equal on 2nd try. |