document.write( "Question 657300: What is the sum of 1 up to 100 \n" ); document.write( "
Algebra.Com's Answer #409805 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! What is the sum of 1 up to 100 \n" ); document.write( "----- \n" ); document.write( "List the numbers: 1,2,3,4,....98,99,100 \n" ); document.write( "---- \n" ); document.write( "Notice that \n" ); document.write( "1+100 = 101 \n" ); document.write( "2+99 = 101 \n" ); document.write( "3+97 = 101 \n" ); document.write( "........ \n" ); document.write( "50+51 = 101 \n" ); document.write( "================ \n" ); document.write( "Sum = 50(101) = 5050 \n" ); document.write( "======================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |