put 3 balls on each side, 公仔箱論壇5 H. Q Y g# Z
if balance, we can prove that all 6 balls on the 天平 is normal,
3 Q3 w! I5 Y2 W% Y/ OTVBNOW 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 not balance, we can prove that the 6 balls outside the 天平 is normal.www3.tvboxnow.com" @( n( C% }2 x; ~! M* @6 I
then use the proved-normal ball on one side and put the other ball on other side
5 s& N4 k- c2 @4 e& e! y9 ]! b0 j) Cto determine the abnormal is heavy and light |