document.write( "Question 266699: My computer password has a letter followed by 5 digits and then another letter. If there are no repeats, then how many possible such computer passwords are there? \n" ); document.write( "
Algebra.Com's Answer #195932 by Edwin McCravy(20055)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "Here is a sample computer password:\r\n" ); document.write( "\r\n" ); document.write( "W83175D\r\n" ); document.write( "\r\n" ); document.write( "Choose a letter to go where the W is any of 26 ways, then\r\n" ); document.write( "Choose a digit to go where the 8 is any of 10 ways, then\r\n" ); document.write( "Choose a digit to go where the 3 is any of the remaining 9 ways, then\r\n" ); document.write( "Choose a digit to go where the 1 is any of the remaining 8 ways, then\r\n" ); document.write( "Choose a digit to go where the 7 is any of the remaining 7 ways, then\r\n" ); document.write( "Choose a digit to go where the 5 is any of the remaining 6 ways, then\r\n" ); document.write( "Choose a letter to go where the D is any of the remaining 25 ways.\r\n" ); document.write( "\r\n" ); document.write( "That's 26*10*9*8*7*6*25 = 19,656,000 possible computer passwords.\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |