1. 1st divide to half take the heavier out % B: ^1 W' C: p0 e; O S8 y+ I. _0 C2. 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) # S" a2 J7 [) [, \3 R7 wTVBNOW 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.