put 3 balls on each side,
Y9 t# U3 m q/ x( Q: S公仔箱論壇if balance, we can prove that all 6 balls on the 天平 is normal,
0 x! a' E# g1 C: c {tvb now,tvbnow,bttvbif 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 m+ E( L; K6 H& S
then use the proved-normal ball on one side and put the other ball on other side
0 ]$ l; r/ v- j8 X6 m: l3 k: l6 c- uto determine the abnormal is heavy and light |