2 votes 2 votes 1.2 + 2.4 + 3.8 + 4.16 + ----------- k.$2^k$ sum of series ?? i found out its general term but due to $2^k$ iam not able to apply formula ? sumit goyal 1 asked Jan 10, 2018 sumit goyal 1 1.6k views answer comment Share Follow See all 11 Comments See all 11 11 Comments reply Show 8 previous comments sumit goyal 1 commented Jan 10, 2018 reply Follow Share @joshi_nitish @ Anu007 got it thanks 0 votes 0 votes Mk Utkarsh commented Jan 10, 2018 reply Follow Share S = k2k+1 - 2( 2k -1 ) 1 votes 1 votes Mk Utkarsh commented Jan 10, 2018 reply Follow Share ..... 1 votes 1 votes Please log in or register to add a comment.