kochipai

1. 1st divide to half take the heavier out
. v* z. l. n' a2 Z3 [; ~公仔箱論壇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)
  \. c5 L4 W" G' i. ktvb now,tvbnow,bttvb3. Same method if is not equal on 2nd try.