put 3 balls on each side,
9 T x& S! ^6 F9 A9 u" S, dTVBNOW 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, 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。7 N' R2 {1 ^4 v; [- P1 _
if not balance, we can prove that the 6 balls outside the 天平 is normal.tvb now,tvbnow,bttvb. x; |% B8 X' z1 W
then use the proved-normal ball on one side and put the other ball on other 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。; p6 K/ `, w n+ t% E+ ^7 a
to determine the abnormal is heavy and light |