put 3 balls on each side,
( p9 K) V# u7 v3 g' l% D4 Ktvb now,tvbnow,bttvbif balance, we can prove that all 6 balls on the 天平 is normal,
; k m3 Z: V, x6 Awww2.tvboxnow.comif not balance, we can prove that the 6 balls outside the 天平 is normal.
; {& t' r/ c2 l7 Athen use the proved-normal ball on one side and put the other ball on other side
& }; x% A: P, U+ {www2.tvboxnow.comto determine the abnormal is heavy and light |