put 3 balls on each side, www1.tvboxnow.com r( J- f6 M5 n9 {& K! r) _/ Z
if balance, we can prove that all 6 balls on the 天平 is normal,
% r; i8 r; R) L$ Zwww1.tvboxnow.comif not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇7 f3 w) b3 \: O! h. D
then use the proved-normal ball on one side and put the other ball on other side tvb now,tvbnow,bttvb" @7 U! N p8 S! l3 Z
to determine the abnormal is heavy and light |