put 3 balls on each 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。8 n! A6 I V1 E1 ]3 n
if balance, we can prove that all 6 balls on the 天平 is normal, " O' R/ j5 p* _
if not balance, we can prove that the 6 balls outside the 天平 is normal.
0 o1 S( F( R$ w9 P4 N! F5 {then use the proved-normal ball on one side and put the other ball on other side
" X8 I! Q3 ]8 t6 Jto determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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