put 3 balls on each side,
0 T& P8 `+ K7 w8 jtvb now,tvbnow,bttvbif balance, we can prove that all 6 balls on the 天平 is normal,
- y8 M! i& U" r公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.tvb now,tvbnow,bttvb7 j! u3 n$ X4 `" d0 \/ p% M1 A3 [/ ?; m
then use the proved-normal ball on one side and put the other ball on other side
l5 K+ i3 D/ K" M5 X: l1 Q公仔箱論壇to determine the abnormal is heavy and light |