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Q)

1.1! + 2.2! + 3.3! + ......... + n.n! = ?

$\begin{array}{1 1}(A) (n+1)! \\ (B) (n+1)!-1 \\ (C) (n+1)!+1 \\ (D) (n+1)!-n! \end{array}$

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