1. 1st divide to half take the heavier out : @8 f( R; Z2 i' Y/ W8 e7 a8 j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)tvb now,tvbnow,bttvb) O- q- U; Z7 H7 L' V
3. Same method if is not equal on 2nd try.