3 votes 3 votes Let S = 1 + 4/7 + 9/7^2 + 16/7^3 + .... i.e, summation of (n+1)^2 / 7^n = ? (upto infinity) Quantitative Aptitude general-aptitude + – Tushar Shinde asked Jan 24, 2016 • retagged Jul 5, 2019 by Cristine Tushar Shinde 2.6k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 7 votes 7 votes Got a clue from brilliant.org Tushar Shinde answered Jan 24, 2016 • selected Nov 29, 2016 by Prajwal Bhat Tushar Shinde comment Share Follow See all 0 reply Please log in or register to add a comment.