Phone Directory


In a certain city, 5% of all the persons in town have unlisted phone numbers. If you select 100 names at random from that city's phone directory, how many people selected will have unlisted phone numbers?


None. If their names are in the phone directory, they do not have unlisted phone numbers!

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Phone Directory Riddle Meme.
Phone Directory Riddle Meme with riddle and answer page link.

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