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。1 J. p/ U \( S4 c+ G3 t, q
if balance, we can prove that all 6 balls on the 天平 is normal, ! d7 }3 s7 ^1 F
if not balance, we can prove that the 6 balls outside the 天平 is normal.os.tvboxnow.com. ?8 ]3 o5 X) V% u1 Y' p
then use the proved-normal ball on one side and put the other ball on other side
& p( c! K- T2 F: N; \to determine the abnormal is heavy and light |