put 3 balls on each side, tvb now,tvbnow,bttvb; v1 a6 O. H4 T+ O( a
if balance, we can prove that all 6 balls on the 天平 is normal,
/ ]" y. {# w' d- L m5 O) mos.tvboxnow.comif not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇/ Y2 Y+ s0 U9 D9 b+ p% l
then use the proved-normal ball on one side and put the other ball on other side $ ?# C4 B) E+ p1 E( E
to determine the abnormal is heavy and light |