document.write( "Question 643988: What is the sum of the first 900 consecutive odd numbers?
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Algebra.Com's Answer #404750 by Alan3354(69443)\"\" \"About 
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What is the sum of the first 900 consecutive odd numbers?
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\n" ); document.write( "that's the odd numbers 1 thru 1799
\n" ); document.write( "Add them in pairs.
\n" ); document.write( "1 + 1799 = 1800
\n" ); document.write( "3 + 1797 = 1800
\n" ); document.write( "etc
\n" ); document.write( "There are 450 pairs, each = 1800
\n" ); document.write( "Sum = 450*1800 = 810,000
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