put 3 balls on each side, tvb now,tvbnow,bttvb4 r: T9 F' O* q) v6 L4 w
if balance, we can prove that all 6 balls on the 天平 is normal, 公仔箱論壇. t/ p; F& ?! Y0 ?) V, B+ L
if not balance, we can prove that the 6 balls outside the 天平 is normal.2 K3 W7 k0 F* [5 [' a3 g
then use the proved-normal ball on one side and put the other ball on other side
% J- f# `$ l9 k0 m0 u& r5.39.217.76to determine the abnormal is heavy and light |