put 3 balls on each side, 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。; ~8 T4 ?7 @9 V9 I% k, w& F
if balance, we can prove that all 6 balls on the 天平 is normal, 5 V7 @* C, X' R, _. u7 d- k# P# I q' Y( j
if not balance, we can prove that the 6 balls outside the 天平 is normal.
& z% o! A/ ] W3 T& q公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side 2 R% g" }& b0 G6 u0 _
to determine the abnormal is heavy and light |