document.write( "Question 255523: how many even three digit numbers are there such that the sum of the tens and unit digits is 13? \n" ); document.write( "
Algebra.Com's Answer #187965 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The last digit must be even, and only 3 of the even digits are such that\r\n" );
document.write( "you can add another digit to them and get 13.  These are 4, 6 and 8, because\r\n" );
document.write( "0 and 2 are too small.\r\n" );
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document.write( "For each of the 3 ways we can choose a units digit, we can choose a tens digit\r\n" );
document.write( "only 1 way, and that's whatever digit we must add to the units digit to get\r\n" );
document.write( "13.  For each of those, there are 9 ways to choose a hundreds digit, 1-9,\r\n" );
document.write( "so as to have a three-digit number.\r\n" );
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document.write( "That's 3x1x9 = 27 ways. Here they all are:\r\n" );
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document.write( "1.  158\r\n" );
document.write( "2.  176\r\n" );
document.write( "3.  194\r\n" );
document.write( "4.  258\r\n" );
document.write( "5.  276\r\n" );
document.write( "6.  294\r\n" );
document.write( "7.  358\r\n" );
document.write( "8.  376\r\n" );
document.write( "9.  394\r\n" );
document.write( "10.  458\r\n" );
document.write( "11.  476\r\n" );
document.write( "12.  494\r\n" );
document.write( "13.  558\r\n" );
document.write( "14.  576\r\n" );
document.write( "15.  594\r\n" );
document.write( "16.  658\r\n" );
document.write( "17.  676\r\n" );
document.write( "18.  694\r\n" );
document.write( "19.  758\r\n" );
document.write( "20.  776\r\n" );
document.write( "21.  794\r\n" );
document.write( "22.  858\r\n" );
document.write( "23.  876\r\n" );
document.write( "24.  894\r\n" );
document.write( "25.  958\r\n" );
document.write( "26.  976\r\n" );
document.write( "27.  994\r\n" );
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document.write( "Edwin
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