put 3 balls on each side,
. J) ^& v" P1 G2 J0 MTVBNOW 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,
+ X7 T0 u5 }6 k. s7 ~3 pif not balance, we can prove that the 6 balls outside the 天平 is normal.
2 Z" t/ Z7 X+ m# }8 zthen use the proved-normal ball on one side and put the other ball on other side 5.39.217.774 e0 D: N3 j$ O! P: M( T
to determine the abnormal is heavy and light |