JEE Math Practice Question
The sum $1+\frac{1+3}{2!}+\frac{1+3+5}{3!}+\frac{1+3+5+7}{4!}+\ldots$ upto $\infty$ terms, is equal to
- A.$3 e$
- B.$2 e$
- C.$4 e$
- D.$6 e$
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