document.write( "Question 1143692: I'm supposed to find an explicit formula for a sequence that goes as 0,0,3,3,5,5,7,7,9,9 \r
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Algebra.Com's Answer #764580 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "The number of odd digits in 18 is 1, subtract 1 from 1, get 0.\r\n" );
document.write( "the number of odd digits in 19 is 2, subtract 2 from 2, get 0.\r\n" );
document.write( "the number of odd digits in 20 is 0, subtract 0 from 3, get 3.\r\n" );
document.write( "the number of odd digits in 21 is 1, subtract 1 from 4, get 3.\r\n" );
document.write( "the number of odd digits in 22 is 0, subtract 0 from 5, get 5.\r\n" );
document.write( "the number of odd digits in 23 is 1, subtract 1 from 6, get 5.\r\n" );
document.write( "the number of odd digits in 24 is 0, subtract 0 from 7, get 7.\r\n" );
document.write( "the number of odd digits in 25 is 1, subtract 1 from 8, get 7.\r\n" );
document.write( "the number of odd digits in 26 is 0, subtract 0 from 9, get 9.\r\n" );
document.write( "the number of odd digits in 27 is 1, subtract 1 from 10, get 9.\r\n" );
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document.write( "So you have to find an explicit formula for the number of odd\r\n" );
document.write( "digits in an integer.  Do you know of one?\r\n" );
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document.write( "Edwin

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