Mathematics · 2016
JEE Main · 10 April 2016, Shift 1 · Q69
The sum Σ_r=1^10(r^2+1) ×(r!) is equal to:
The sum $\displaystyle \sum_{r=1}^{10}\left(r^2+1\right) \times(r!)$ is equal to :
Official answer
(2)
$\displaystyle 10 \times(11!)$
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JEE Main 2016 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.