put 3 balls on each side, 2 M9 o" ?- f2 A0 l
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。' ^. L3 _2 } }4 f
if not balance, we can prove that the 6 balls outside the 天平 is normal.5.39.217.76! X9 ^& v& j3 i
then use the proved-normal ball on one side and put the other ball on other side
6 G# h8 R: N% g5.39.217.76to determine the abnormal is heavy and light |