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Originally Posted by gaurav200x
Hey guys,
instead of just posting thanks and thanks, please do post some content as well... Browsing this thread and all i can see is 'thanks' in so many posts..
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here for change i wil post a small formula but an intersting one..
1/(a1*a2)+1/(a2*a3)...........1/(an-1*an) = n-1/(a1*an)
example
1/(1*2)+1/(2*3)+.........
where a1,a2...an are 1,2,3........n
its from progressions u can check it out by using numbers....
arun
coimbatore:grab: