document.write( "Question 67089This question is from textbook Advanced mathematics
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document.write( ": How many three-digit counting numbers are there that are less than 300 such that all the digits are even? \n" );
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Algebra.Com's Answer #47767 by Zoop(21)![]() ![]() ![]() You can put this solution on YOUR website! Wierd---I thought I had solved this one already, but for some reason, I can't find it. Anyway, here's how to do it.\r \n" ); document.write( "\n" ); document.write( "There is only 1 possibility for the first digit of any of the numbers, as no 3-digit number with an even first digit is underneath 300 unless the first digit is 2. Therefore, we take 1 as the first term.\r \n" ); document.write( "\n" ); document.write( "For the second one, it could be 2,4,6, or 8. So there are 4 choices, as there are for the third term too.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Therefore, we have 16 counting numbers less than 300 that have all even digits.\r \n" ); document.write( "\n" ); document.write( "If you'd like a list of the numbers: \n" ); document.write( "222 \n" ); document.write( "224 \n" ); document.write( "226 \n" ); document.write( "228 \n" ); document.write( "242 \n" ); document.write( "244 \n" ); document.write( "246 \n" ); document.write( "248 \n" ); document.write( "262 \n" ); document.write( "264 \n" ); document.write( "266 \n" ); document.write( "268 \n" ); document.write( "282 \n" ); document.write( "284 \n" ); document.write( "286 \n" ); document.write( "288\r \n" ); document.write( "\n" ); document.write( "Done. =) \n" ); document.write( "-Zoop \n" ); document.write( " |