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。/ n+ Y/ o9 D) d. A2 P
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) / z/ {& G. \/ R- r* A3 J$ d# i, ]; k5.39.217.773. Same method if is not equal on 2nd try.