Quote:
Originally Posted by 4X4
OK, my MAth 30 is long gone. Perms and coms... How many numbers are there available with the 999 area codes available to N.A.?
Because I'm a little surprised that we're getting away with 10 digit dialling.
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Well, (999)-999-9999 is one digit short of being 10 billion.
Take away any area code starting with 0 or 1 and you are down to 8 billion. Then take away other area codes and prefixes (middle three digits in a 10 digit number) that you cannot use like 911, 411, etc, and let's say you lose another 500 million numbers.
That leaves 7.5 billion numbers. I think we'll be fine. If 2 million people are just using 7.5 million numbers (Southern Alberta as my example) then North American would have to grow from 340 million to 2 billion people before we run out of numbers. And at that point there would be an epidemic of brain cancer due to so many people using cell phones.