Mathematics
Mathematics, 28.01.2021 05:30, GbTaco

Phone Numbers You remember part of your friend's 7-digit phone number, but you cannot remember the rest.
a. Your friend's number begins with 79 and ends with five other digits.
How many different phone numbers can begin with 79?

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Answers: 3

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Phone Numbers You remember part of your friend's 7-digit phone number, but you cannot remember the...

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