put 3 balls on each side, tvb now,tvbnow,bttvb: N9 @3 U' t4 Y* ? g
if balance, we can prove that all 6 balls on the 天平 is normal,
2 Y0 g$ R; Q7 }. J5.39.217.76if not balance, we can prove that the 6 balls outside the 天平 is normal.
# s% g9 b0 S7 W* D+ rthen use the proved-normal ball on one side and put the other ball on other side 5.39.217.760 v) X4 n/ c, Q _, L5 T
to determine the abnormal is heavy and light |