put 3 balls on each side,
7 R) } n% b, s+ \2 f) X5.39.217.77:8898if balance, we can prove that all 6 balls on the 天平 is normal, * l3 B3 O; J8 C2 E
if not balance, we can prove that the 6 balls outside the 天平 is normal.% _3 l/ p2 e/ {
then use the proved-normal ball on one side and put the other ball on other side tvb now,tvbnow,bttvb) \* z+ h8 K1 p
to determine the abnormal is heavy and light |