put 3 balls on each side,
# K6 [& I) \7 u% F( V5.39.217.77if balance, we can prove that all 6 balls on the 天平 is normal, . B7 f! m$ H5 O8 c8 d, S% M v
if not balance, we can prove that the 6 balls outside the 天平 is normal.
" g* q7 n* {5 [' j, @公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
, x# G3 L5 u6 [. E, l公仔箱論壇to determine the abnormal is heavy and light |