put 3 balls on each side,
2 j3 q4 K _( l- 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,
2 k' @$ R# L( P, Z, V0 o2 R% O5.39.217.76if not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇 w6 B; y: T7 f+ M8 X! }; a& M, h
then use the proved-normal ball on one side and put the other ball on other side 5.39.217.769 X, r4 i6 v. S, x5 l
to determine the abnormal is heavy and light |