put 3 balls on each side,
: Q& F; b& z- @8 d! T. l. y5 }( f' lif balance, we can prove that all 6 balls on the 天平 is normal, 0 D8 n g" I ` a# m, o7 u
if not balance, we can prove that the 6 balls outside the 天平 is normal.1 o& w0 q$ m: M/ C: m% {3 V
then use the proved-normal ball on one side and put the other ball on other side
! r6 b9 S/ Z" ITVBNOW 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。to determine the abnormal is heavy and light |