1 votes 1 votes For $n \in \mathbb{N}$, we define $s_{n}=1^{3}+2^{3}+3^{3}+...+n^{3}$. Which of the following holds for all $n \in \mathbb{N}$? $s_{n}$ is an odd integer $s_{n} n^{2}(n+1)^{2}/4$ $s_{n} = n(n + 1)(2n + 1)/6$ None of the above Quantitative Aptitude tifrmaths2014 quantitative-aptitude + – makhdoom ghaya asked Dec 17, 2015 edited Aug 18, 2020 by soujanyareddy13 makhdoom ghaya 421 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 1 votes 1 votes Ans will be (B) srestha answered Dec 18, 2015 selected Jun 8, 2016 by Arjun srestha comment Share Follow See all 0 reply Please log in or register to add a comment.