document.write( "Question 908941: How many seven-digit telephone numbers are possible if the first two digits cannot be ones or zeros? \n" ); document.write( "
Algebra.Com's Answer #551411 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "Choose the 1st digit any of 8 ways, {2,3,4,5,6,7,8,9}.\r\n" );
document.write( "Choose the 2nd digit any of 8 ways, {2,3,4,5,6,7,8,9}.\r\n" );
document.write( "Choose the 3rd digit any of 10 ways, {0,1,2,3,4,5,6,7,8,9}.\r\n" );
document.write( "Choose the 4th digit any of 10 ways, {0,1,2,3,4,5,6,7,8,9}.\r\n" );
document.write( "Choose the 5th digit any of 10 ways, {0,1,2,3,4,5,6,7,8,9}.\r\n" );
document.write( "Choose the 6th digit any of 10 ways, {0,1,2,3,4,5,6,7,8,9}.\r\n" );
document.write( "Choose the 7th digit any of 10 ways, {0,1,2,3,4,5,6,7,8,9}.\r\n" );
document.write( "\r\n" );
document.write( "Answer 8*8*10*10*10*10*10 = 82*105 = 6400000\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );