1. If every phone number was used in the state of Colorado, how many individual numbers would there be?
Note: The first number of a 7-digit phone number can not be a 0 or 1. Also there are currently 3 area codes in the state?
2. 18 months ago there were only two area codes in the state (303 & 719) with the addition of one new code (970), how many new phone numbers could be issued?
3. If you chose a Colorado phone # at random, what is the probability that the number is a Broomfield number?
Note: We will assume the first three digits of all Broomfield numbers are 466, 469, and 465.