Question 1146052
<pre><font size=6><b>
 Since the counting numbers       1 through the 7-digit number 
                            9999999, inclusive, account for 
                            9999999 counting numbers, the 8-digit phone numbers
                           60000001 through 
                           69999999 similarly account for that same number,
                            9999999, of phone numbers, plus the one phone number 
                           60000000, so there are 
                           10000000 phone numbers. 
That's ten million.

Edwin</pre></font></b>