document.write( "Question 766794: how many whole numbers between 1 and 1,000 do not contain the digit 1? \n" ); document.write( "
Algebra.Com's Answer #467254 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "Obviously our number can't be \"1000\", so the maximum possible number of digits is \"3\". \r
\n" ); document.write( "\n" ); document.write( "If our number is a \"one\"\"+digit\" number, then there are \"eight\" possibilities: \"2\" to \"9\". \r
\n" ); document.write( "\n" ); document.write( "If our number is a \"two\"\"+digit\" number, there are \"8\" possibilities for the tens digit (anything but \"0\" and \"1\") and \"9\" possibilities for the units digit for a total of \"8%2A+9+=+72\" numbers. \r
\n" ); document.write( "\n" ); document.write( "If our number is a \"three\"\"+digit\" number, there are \"8\" possibilities for the hundreds digit and \"9\" possibilities for the tens and \"9\" for the units digits for a total of \"8+%2A+9%2A+9+=+648\".\r
\n" ); document.write( "\n" ); document.write( "So, the total is \"648+%2B+72+%2B+8+=+728\".\r
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