document.write( "Question 140367: How many three-digit numbers are palindromes? \n" ); document.write( "

Algebra.Com's Answer #102255 by josmiceli(19441) $\"\"$ $\"About$

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The 1st and the last digits must be the same
\n" ); document.write( "since it must read the same forwards of backwards.
\n" ); document.write( "The 1st digit cannot be $\"0\"$ , so the possibilities are:
\n" ); document.write( "1-1
\n" ); document.write( "2-2
\n" ); document.write( "3-3
\n" ); document.write( "4-4
\n" ); document.write( "5-5
\n" ); document.write( "6-6
\n" ); document.write( "7-7
\n" ); document.write( "8-8
\n" ); document.write( "9-9
\n" ); document.write( "Or, $\"9\"$ possibilites
\n" ); document.write( "The 2nd digit can be 0-9, or $\"10\"$ possibilities
\n" ); document.write( "There are $\"10\"$ choices for a 2nd digit for each
\n" ); document.write( "of the $\"9\"$ choices 1-1 through 9-9, so
\n" ); document.write( "there are $\"9%2A10+=+90\"$ 3-digit palindromes
\n" ); document.write( " \n" ); document.write( "

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