put 3 balls on each side, os.tvboxnow.com- V* h9 ^, d6 }: Q' b1 D) X: T. d
if balance, we can prove that all 6 balls on the 天平 is normal,
8 R7 ? u. `, ]6 E; H, ]tvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.TVBNOW 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。2 @! p+ A V. ?* w& r- U
then use the proved-normal ball on one side and put the other ball on other side 9 @3 P$ k4 g" _) L: n
to determine the abnormal is heavy and light |