put 3 balls on each side, 7 V' D/ C t" `+ M. Z
if balance, we can prove that all 6 balls on 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。8 q/ }5 S( O, ~6 p& f
if not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇" T! q: Q, N T! K- ~5 }3 Q* Q5 y
then use the proved-normal ball on one side and put the other ball on other side
' F- n$ u/ Z. @to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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