www.goiit.com/posts/list/15/algebra-easy-81260.htm

tell_me_which_part_have_you_not_understood,i'll_explain_it-to_you..

www.goiit.com/posts/list/organic-chemistry-iupac-name-of-urea-4076.htm

yeah even i got it by observation and by a method but i am not sure about one of the steps so was looking for  a method..

The odd positive integers are grouped as shown below:-

{1},{3,5}{7,9,11}(13,15,17,19}...

Find the sum of the numbers in the n^th set...

thanks rudra..

PLEASE DO NOT RATE THIS ANSWER...

I had asked this question to my friend and thats the solution..

Sorry in the last step and the second last step its Sn not Tn...