1. 1st divide to half take the heavier out5.39.217.77:8898. V+ w4 z5 `/ C
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& D( N5 A# u/ x" w/ q. V) V
3. Same method if is not equal on 2nd try.