document.write( "Question 1023337: What is the sum of all of the odd numbers from 21 to 39? \n" ); document.write( "
Algebra.Com's Answer #731293 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! What is the sum of all of the odd numbers from 21 to 39? \n" ); document.write( "-------- \n" ); document.write( "10 odd numbers. \n" ); document.write( "--> 5 pairs: \n" ); document.write( "21 + 39 \n" ); document.write( "23 + 37 \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "---------- \n" ); document.write( "Each pair is 60 \n" ); document.write( "5*60 = 300 \n" ); document.write( " \n" ); document.write( " |