“概率為50%，應至少活50人” 這句話顯然不對！

來源: 500miles 於 2011-12-10 10:41:51 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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“概率為50%， 應至少活50人” 這句話顯然不對！