put 3 balls on each side,
6 J# y$ _, D5 nif balance, we can prove that all 6 balls on the 天平 is normal,
& O* G% e7 K# P, E' P. Btvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside 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。! m" [* ~, p8 @/ Y! x
then use the proved-normal ball on one side and put the other ball on other side 2 O" P0 A5 i( ]% r5 a z: p
to determine the abnormal is heavy and light |