put 3 balls on each side,
' n6 [$ Q- w( l+ T/ a! V8 t. V$ O公仔箱論壇if balance, we can prove that all 6 balls on the 天平 is normal,
8 M, W& q: Z r& g) w$ h! ^9 Y6 w: itvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
! p3 }, ^8 G# ?; R2 Xwww3.tvboxnow.comthen use the proved-normal ball on one side and put the other ball on other side www3.tvboxnow.com* K6 U% E. o# p& }. S
to determine the abnormal is heavy and light |