Tuesday, 11 February 2025

In an AP if S_n = n(4n + 1) Then, find the AP. [10th CBSE 2022]


 

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If find x. 1/(9!) + 1/(10!) = x/(11!).

  Here n! is read as n factorial. It can be written as n(n-1)! or n(n-1)(n-1)!