put 3 balls on each side,
/ O+ {% ^# i! @' ?7 E6 eTVBNOW 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。if balance, we can prove that all 6 balls on the 天平 is normal,
( \8 I* m) c$ |& F$ n公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.
* e: Z' [; ]8 |: m2 P' M: N K! h公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side 公仔箱論壇5 F' C: L& u) }& E
to determine the abnormal is heavy and light |