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。: ~6 X6 W" k4 x+ h
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) 1 e9 I6 n% H2 v9 `: N; @4 i5.39.217.763. Same method if is not equal on 2nd try.