SOLUTION: How many seven-digit telephone numbers are possible if the first two digits cannot be ones or zeros

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Question 1136088: How many seven-digit telephone numbers are possible if the first two digits cannot be ones or zeros
Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
.
%2810-2%29%2A%2810-2%29%2A10%5E%287-2%29 = 6400000.