document.write( "Question 995334: How many integers greater than 1 million and less than 9 million are perfect square?
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document.write( "A. 1999
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document.write( "B. 2000
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document.write( "C. 2001
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document.write( "D. 3000 \n" );
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Algebra.Com's Answer #614087 by jim_thompson5910(35256) ![]() You can put this solution on YOUR website! sqrt(1,000,000) = 1,000 \n" ); document.write( "sqrt(9,000,000) = 3,000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If you square a whole number between 1,000 and 3,000 (exclusive) you'll get a result that is a whole number between 1 million and 9 million (exclusive).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 3000-1000+1 = 2000+1 = 2001 whole numbers that span from 1,000 to 3,000. You can count them yourself, but the handy shortcut formula is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If we exclude the endpoints 1 million and 9 million, then we subtract off 2 to get the final answer of A. 1999 \n" ); document.write( " |