put 3 balls on each side,
2 Y& i6 j$ j5 q; Z- \9 O公仔箱論壇if balance, we can prove that all 6 balls on the 天平 is normal, 5.39.217.77:88986 r- O& I) i8 L2 ]: X# k2 Y
if not balance, we can prove that the 6 balls outside the 天平 is normal.5.39.217.77:8898* ]( x% \" p. U( Y0 A9 x
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。! e. x$ b- X( x' m! |5 ^
to determine the abnormal is heavy and light |