put 3 balls on each side, " P/ I0 R5 n0 C. |
if balance, we can prove that all 6 balls on the 天平 is normal, tvb now,tvbnow,bttvb9 W) u! y9 G2 V# H2 s& s# F
if not balance, we can prove that the 6 balls outside the 天平 is normal.
! Q; L2 c7 G( @8 ]6 k8 }! h! F" D: @then use the proved-normal ball on one side and put the other ball on other 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。$ r+ [8 l2 [, \# ]
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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