put 3 balls on each side,
" d0 d' ^. a* R2 w/ wtvb now,tvbnow,bttvbif balance, we can prove that all 6 balls on the 天平 is normal, 5.39.217.77' ~1 o7 F4 U+ k; f: u
if not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇" c7 Q( I8 N( w [- r
then use the proved-normal ball on one side and put the other ball on other side
9 ]1 v4 J; Q7 q/ X6 e5.39.217.77to determine the abnormal is heavy and light |