put 3 balls on each side, tvb now,tvbnow,bttvb$ j( ?( a4 {: \% b, ]. g6 @
if balance, we can prove that all 6 balls on the 天平 is normal, tvb now,tvbnow,bttvb+ X3 g/ q, g+ |' F+ Q
if not balance, we can prove that the 6 balls outside the 天平 is normal.
3 `/ W7 n9 T2 s7 [& K公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
" E3 d3 V5 V5 d公仔箱論壇to determine the abnormal is heavy and light |