document.write( "Question 1027697: The access code for a cars security system consists of four digits. The first digit cannot be zero and the last digit must be odd. How many different codes are available?\r
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Algebra.Com's Answer #643157 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
There are 10 digits to choose from.
\n" ); document.write( "First block only 9 since zero is disallowed.
\n" ); document.write( "Last block only 5 since it's odd (1,3,5,7,9)
\n" ); document.write( "\"N=9%2A10%2A10%2A5=4500\"
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