document.write( "Question 1076690: How do you find the sum of the odd numbers from 19 to 101. I need a formula to turn in. \n" ); document.write( "
Algebra.Com's Answer #691323 by math_helper(2461)\"\" \"About 
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S1 = 1
\n" ); document.write( "S2 = 1+3 = 4
\n" ); document.write( "S3 = 1+3+5 = 9
\n" ); document.write( "…
\n" ); document.write( "Sn = 1+3+5+…+(2n-1) = \"n%5E2\"
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\n" ); document.write( "\n" ); document.write( "The sum you want to find is that for 2n-1 = 101 —> n=51
\n" ); document.write( "then you will want to subtract the sum for 2n-1 = 19 —> n=10\r
\n" ); document.write( "\n" ); document.write( "Can you work it out?\r
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\n" ); document.write( "My answer assumes you want to exclude 19, if it is included, adjust accordingly. \r
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