document.write( "Question 91359: A few years ago Portland instituted a new area code of 971 so that more phone numbers could be assigned. How many seven-digit phone numbers can be formed using this area code if the only restriction is that the first number cannot be 0 or 1? \n" ); document.write( "
Algebra.Com's Answer #66316 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many seven-digit phone numbers can be formed using this area code if the only restriction is that the first number cannot be 0 or 1? \n" ); document.write( "------------- \n" ); document.write( "8 ways to pick the 1st digit \n" ); document.write( "10 ways to pick each of the remaining 6 digits. \n" ); document.write( "Answer: 8*10^6 = 8 million \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |