put 3 balls on each side,
. x" N3 t( p4 D7 gif balance, we can prove that all 6 balls on the 天平 is normal, 5.39.217.771 g' W- X c& n; z* x! Q. \" b$ Z$ t/ X
if not balance, we can prove that the 6 balls outside the 天平 is normal.
; [, y9 A! r, o- l% w& H公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
8 ]- d. ]* }0 d3 ?, k5.39.217.77to determine the abnormal is heavy and light |