put 3 balls on each side, tvb now,tvbnow,bttvb" J/ y- U+ ?% M5 y2 G
if balance, we can prove that all 6 balls on the 天平 is normal, H8 |3 [# w T8 v( p( s
if not balance, we can prove that the 6 balls outside the 天平 is normal.
: ~# ?9 }) [- E! W# Q. j公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
( w# i, f0 v) N4 l/ l [! u/ J公仔箱論壇to determine the abnormal is heavy and light |