Solution-Last four digits of the phone number

Last four digits of the phone number

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Reference no: EM131382011

All phone numbers consist of a three digit area code, a three digit exchange and then a four-digit number. A town uses the 587 area code and the exchange 355; for example, 587-355-1234. How many different phone numbers are possible in this town when at least one digit repeats in the last four digits of the phone number?

Reference no: EM131382011

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Last four digits of the phone number : All phone numbers consist of a three digit area code, a three digit exchange and then a four-digit number. A town uses the 587 area code and the exchange 355; for example, 587-355-1234. How many different phone numbers are possible in this town w..

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Last four digits of the phone number

Reference no: EM131382011

Reference no: EM131382011

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