put 3 balls on each side, 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。; g& F% {2 u8 M" {& A
if balance, we can prove that all 6 balls on the 天平 is normal,
0 s$ J: ^7 t. A! I t$ Gif 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。; S. F' I3 r" _0 T; e2 l
then use the proved-normal ball on one side and put the other ball on other side
' d$ ?: c! M& q! Y1 a4 l8 y; ~4 Kto determine the abnormal is heavy and light |