put 3 balls on each side, 公仔箱論壇3 j- n; q t# d5 C2 D' o
if balance, we can prove that all 6 balls on the 天平 is normal,
5 j$ y- f. h" b公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.
- e0 R: t% t/ F; jwww1.tvboxnow.comthen use the proved-normal ball on one side and put the other ball on other side
' U& C, X0 U* D3 _1 ~- d; U2 {( \www1.tvboxnow.comto determine the abnormal is heavy and light |