put 3 balls on each side, ) U: K0 j( K9 B; {$ J/ e% C
if balance, we can prove that all 6 balls on the 天平 is normal, ( C- l' p. M+ U$ \6 \( b m4 p
if not balance, we can prove that the 6 balls outside the 天平 is normal.www3.tvboxnow.com3 O* P( n$ a; K
then use the proved-normal ball on one side and put the other ball on other side
* O5 u' o$ Z5 f9 o$ o4 [6 @4 ? L# CTVBNOW 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 |