How many phone numbers were possible in the state of georgia before 1954? (disregard rules 2 and 3)

Although this case is fictitious, it represents a common example of 833 area code fraud. Scammers and spammers automatically call phone numbers and leave voicemails to lure their targets.

Each NXX has 10,000 possible numbers. So, theoretically, there are 7,920,000 phone numbers per area code. Not all phone numbers are in use because carriers require test numbers and other codes.

A new US government report predicts that the US, Canada, Guam, Bermuda, and Trinidad will run out of 10-digit phone numbers by 2025.

a. How many phone numbers were possible in the state of Georgia before 1954? (disregard rules 2 and 3)

b. Today, how many phone numbers are possible in the Atlanta metropolitan area? (disregard rules 2 and 3)

c. Using all of the restrictions above, how many 7-digit numbers are possible in a single area code?

d. How many 10-digit numbers are restricted in the Atlanta area?

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