1. 1st divide to half take the heavier out 5 i& |9 i P$ M3 iTVBNOW 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)! v6 d" ~( {; I1 e
3. Same method if is not equal on 2nd try.