3. You have 8 balls. One of them is defective and weighs less than others. You have a balance to measure balls against each other. In 2 weighings how do you find the defective one?
经典的八球称重，不高兴做了，谁来？
posted on 2006-06-21 18:09 GwQ 阅读(2351) 评论(2) 收藏 举报
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