How many seven-digit telephone numbers can be arranged if a telephone number does not begin with 0

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How many seven-digit telephone numbers can be arranged if a telephone number does not begin with 0 or 1? Find the probabilities that a randomly selected number contains exactly three ones, exactly three fours?

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Probability And Stochastic Modeling

ISBN: 9781439872062

1st Edition

Authors: Vladimir I. Rotar

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Question Posted: Jan 04, 2024 01:56 PM

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How many seven-digit telephone numbers can be arranged if a telephone number does not begin with 0

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By the basic counting principle there are 810 108106 possible teleph...View the full answer

Probability And Stochastic Modeling

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