put 3 balls on each side, 5.39.217.77:88980 y. G# j) J$ u5 T& k* e
if balance, we can prove that all 6 balls on the 天平 is normal,
- \6 c# O% \: w& u9 Z7 f公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.
& D6 Q& M6 _% w4 D' u9 T5.39.217.77:8898then use the proved-normal ball on one side and put the other ball on other side tvb now,tvbnow,bttvb9 W9 W7 r! y- Z2 {' R! P+ L) L/ w( r
to determine the abnormal is heavy and light |