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Mathematics, 14.10.2020 14:01 gonzalesalexiaouv1bg

How many phone numbers are possible in the (770) area code if:

For the form ABC-, A is restricted to numbers 2-9. B, C, and X can be any digit 0-9. Also, the number 867-5309 is not used.

A. 6,999,999

B. 7,000,000

C. 7,999,999

D. 8,000,000

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How many phone numbers are possible in the (770) area code if:

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