put 3 balls on each side, . q1 }! G4 T! }$ D7 @
if balance, we can prove that all 6 balls on the 天平 is normal,
" w9 Y R. l: `8 S' \! k7 owww2.tvboxnow.comif not balance, we can prove that the 6 balls outside the 天平 is normal.# g& ]# P( `' c0 b. ` ^9 V. W
then use the proved-normal ball on one side and put the other ball on other side tvb now,tvbnow,bttvb9 n/ a* H8 W& K+ L @" c" D( d
to determine the abnormal is heavy and light |