put 3 balls on each side,
5 n& }0 b$ J& G6 L3 `+ \ {www3.tvboxnow.comif balance, we can prove that all 6 balls on the 天平 is normal, 1 l8 [8 S/ w; R) u' k
if not balance, we can prove that the 6 balls outside the 天平 is normal.www3.tvboxnow.com" |, B) ]3 y# H; j. W. g, ^
then use the proved-normal ball on one side and put the other ball on other side
$ H. \3 I" `0 T" }; t: ?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。to determine the abnormal is heavy and light |