document.write( "Question 1001481: Find the sum of the odd integers between 21 and 61 inclusive \n" ); document.write( "
Algebra.Com's Answer #618696 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Find the sum of the odd integers between 21 and 61 inclusive \n" ); document.write( "----------- \n" ); document.write( "21 to 61 is 41 integers. \n" ); document.write( "21 of them are odd. \n" ); document.write( "41 is the center integer. \n" ); document.write( "The other 10 make 10 pairs, the some of each pair is 82 \n" ); document.write( "eg 21 + 61 \n" ); document.write( "23 + 59 \n" ); document.write( "etc. \n" ); document.write( "--> 82*10 + 41 \n" ); document.write( "= 861 \n" ); document.write( " \n" ); document.write( " |