put 3 balls on each side,
$ o+ F! ^3 h2 o& f; Z% S- D; \5.39.217.77if balance, we can prove that all 6 balls on the 天平 is normal,
1 c, K5 L) i4 r+ w公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.5.39.217.773 i# Q. z+ S. w" v2 p6 {3 b
then use the proved-normal ball on one side and put the other ball on other side 公仔箱論壇3 J0 p& W) j, ?4 [2 a
to determine the abnormal is heavy and light |