put 3 balls on each side,
" O# a2 P& [; [$ b: B/ s9 S" s3 D( BTVBNOW 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, 公仔箱論壇9 g6 H$ j, K; T8 O7 i3 \
if not balance, we can prove that the 6 balls outside the 天平 is normal.
3 P0 g8 }1 ^3 U公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side % O. U; S+ ]0 `
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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