put 3 balls on each side,
4 ~, C+ G8 f2 e. i$ Z! m+ p! hif balance, we can prove that all 6 balls on the 天平 is normal,
" J3 |9 o: ]( J, h2 P4 N% _- vif not balance, we can prove that the 6 balls outside the 天平 is normal.
5 W# {4 e# k0 h公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
, ? _5 b" _* f7 u6 h6 Etvboxnow.comto determine the abnormal is heavy and light |