document.write( "Question 511581: How many seven-digit phone numbers are possible if the first two digits cannot be zero or one? \n" ); document.write( "
Algebra.Com's Answer #342325 by oberobic(2304)\"\" \"About 
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7*7*9*9*9*9*9 = 7^2*9^5 = 2,893,401 \n" ); document.write( "
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