SOLUTION: Before 1995, three digit area codes could begin with any number except 0 or 1. The middle number was either 0 or 1, and the last number could be any digit. How many possible area
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Question 774048: Before 1995, three digit area codes could begin with any number except 0 or 1. The middle number was either 0 or 1, and the last number could be any digit. How many possible area codes were there? Beginning in 1995, area codes were not limited to having 0 or 1 as the middle number. How many new area codes became available? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Before 1995:
For beginning number,
2,3,4,5,6,7,8, or 9 are allowed
That is 8 digits allowed
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2 digits are allowed for 2nd number
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3rd number has 0 through 9 allowed
That is 10 digits allowed
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There are
possible area codes
===============
Beginning with 1995: possible area codes new area codes
made available
