put 3 balls on each side, tvb now,tvbnow,bttvb6 j$ ]6 H7 p: j
if balance, we can prove that all 6 balls on the 天平 is normal,
; s W* g7 f+ l# JTVBNOW 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.. C4 i" S0 `' \; Y
then use the proved-normal ball on one side and put the other ball on other side ! p6 l/ J! {* g2 f! Z& B
to determine the abnormal is heavy and light |