1. 1st divide to half take the heavier out ) b, e; L- }# P0 f* }& z" Vtvb now,tvbnow,bttvb2. 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) ) c* Q" m4 t- |2 J; [$ m公仔箱論壇3. Same method if is not equal on 2nd try.