put 3 balls on each side, tvb now,tvbnow,bttvb% C0 z+ m% q y9 I
if balance, we can prove that all 6 balls on the 天平 is normal, tvboxnow.com& h1 H' G/ _( k- z F
if not balance, we can prove that the 6 balls outside the 天平 is normal.+ r. v4 O- N" P/ z" C6 ?0 P/ K
then use the proved-normal ball on one side and put the other ball on other side
0 x; v1 A3 n. N: ]to determine the abnormal is heavy and light |