1. 1st divide to half take the heavier out5 U# f/ m: M5 a8 [' ~
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)TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。, e/ b: W6 v8 j6 R8 V: `4 D* _
3. Same method if is not equal on 2nd try.