put 3 balls on each side, 2 _5 j& J. k( s
if balance, we can prove that all 6 balls on the 天平 is normal,
8 ^4 O! Y! Y2 X, TTVBNOW 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 not balance, we can prove that the 6 balls outside the 天平 is normal.5.39.217.76# _7 I0 R/ \9 p& i7 c! `/ }# E
then use the proved-normal ball on one side and put the other ball on other side 5.39.217.76" m9 J5 i% H4 r9 z
to determine the abnormal is heavy and light |