1. 1st divide to half take the heavier out # F- p; k. M8 W! I8 {6 }! jTVBNOW 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。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) / P$ t. W* m7 e6 M: [3. Same method if is not equal on 2nd try.