put 3 balls on each side, 5 Q, s0 n3 B% [
if balance, we can prove that all 6 balls on the 天平 is normal,
8 Q6 k7 l, ?7 A+ E6 N$ R% ?- Xif not balance, we can prove that the 6 balls outside the 天平 is normal.
9 ~) g6 h5 m# T% f; _! z# itvb now,tvbnow,bttvbthen use the proved-normal ball on one side and put the other ball on other side 5.39.217.76' r7 i. D4 { E7 o
to determine the abnormal is heavy and light |