Unlist phone number


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?

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  • 1 Answer(s)

    None, all people in the phonebook are listed.
    The unlisted numbers are not in there.

    CugelTheWise Expert Answered on 10th October 2019.
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