If `sum_(r=1)^n (r^2 +3r +3) (r +1)! =998 (998!) - 4`, then n is equal to
13 views · Published 13 October 2018 · 5:45 · Indexed 27 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `sum_(r=1)^n (r^2 +3r +3) (r +1)! =998 (998!) - 4`, then n is equal to
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