Author: sanjayism Posted: Wed Jan 20, 2010 7:41 am (GMT -8) Q.1 1+2+3+4+……….n= n/2(n+1), 2+4+6+*+……….2n= n(n+1), 1+3+5+ ……………(2n+1) or (2n-1)?????

Go here to see the original: 
Problem Solving :: RE: plz answer these questions?