1. 1st divide to half take the heavier out+ z0 s i6 T: T7 U5 F: e, R0 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) / H( A7 b, Z- v7 u+ tTVBNOW 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。3. Same method if is not equal on 2nd try.