put 3 balls on each side,
; D& R; U1 a6 c- C5 a1 M$ ~! Rif balance, we can prove that all 6 balls on the 天平 is normal,
1 y1 s5 E; m; P6 xtvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.5.39.217.761 ^1 l; K5 w {9 ~$ ? [* M
then use the proved-normal ball on one side and put the other ball on other side 公仔箱論壇/ W# F( m$ y. q' F( T. v6 N+ h4 j
to determine the abnormal is heavy and light |