1. 1st divide to half take the heavier outTVBNOW 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。' m! o. Q6 n! \3 C1 ~5 Z
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)4 B& O- R1 B4 m- T7 S7 L, \0 B6 x
3. Same method if is not equal on 2nd try.