1. 1st divide to half take the heavier out5.39.217.76. O V# ^' n1 k. n
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) * x) x- n2 m# a' V' X公仔箱論壇3. Same method if is not equal on 2nd try.