document.write( "Question 933286: how many even 5 digit numbers are there? \n" ); document.write( "
Algebra.Com's Answer #569115 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
clearly half of the 5 digit integers are even so 45000, but let's show it another way...\r
\n" ); document.write( "\n" ); document.write( "\"a%5Bn%5D=99998\"\r
\n" ); document.write( "\n" ); document.write( "\"a%5B1%5D=10000\"\r
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\n" ); document.write( "\n" ); document.write( "using arithmetic sequences\r
\n" ); document.write( "\n" ); document.write( "\"n=%28a%5Bn%5D-a%5B1%5D%29%2Fd%2B1=89998%2F2%2B1=45000\"
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