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。% W& C& i/ ?& C6 a$ F* s# Q* H) o
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) ' D/ u: p/ m. @; K8 v. c4 o% etvb now,tvbnow,bttvb3. Same method if is not equal on 2nd try.