The other 7 digits of a phone number have the following rules when generating a new
number
SPECIAL EXCEPTIONS
B and C cannot both be equal to 1
The phone number set 555-0100 through 555-0199 are not used because they are
saved for fictional use in movies and television shows.
How many 7 digit numbers are available? (not including the area code...yet)
How many TOTAL phone numbers are possible lincluding the area code answer
you got from number 2 )
If we look up the current population of the United States, are we danger of running
out of phone numbers?
The current US population is increase by about 1% each year. If this remains
constant, how many years will it take before we run out of phone numbers?
number
ABC A is any digit 2-9 B is any digit 0-9 C is any digit 0-9
XXXX 6-0 a6ip Aue si X
SPECIAL EXCEPTIONS B and C cannot both be equal to 1 The phone number set 555-0100 through 555-0199 are not used because they are
4) How many TOTAL phone numbers are possible (including the area code answer you got from number 2)
5) If we look up the current population of the United States, are we danger of running out of phone numbers?
6) The current U5 population is increase by about 1% each year, If this remains constant, how many years will it take before we run out of phone numbers?