put 3 balls on each side,
: O# Y! t W9 v6 C+ KTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。if balance, we can prove that all 6 balls on the 天平 is normal,
* K3 H+ w. l5 k( Y3 p公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。- [# O% [" F# D* f0 @! [
then use the proved-normal ball on one side and put the other ball on other side
! |# O- m1 E2 H) w9 }( _ ~to determine the abnormal is heavy and light |