document.write( "Question 836270: Determine how many different computer passwords are possible if (a) digits and letters can be repeated , (b) digits and letters cannot be repeated. \r
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Algebra.Com's Answer #504060 by Fombitz(32388)\"\" \"About 
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DDDLLLL\r
\n" ); document.write( "\n" ); document.write( "a) \"N=10%2A10%2A10%2A26%2A26%2A26%2A26=456976000\"
\n" ); document.write( "b) \"N=10%2A9%2A8%2A26%2A25%2A24%2A23=258336000\"
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