1+ 1/(2!)+2/(3!)+4/(2!)+ .... oo =...

`1+ 1/(2!)+2/(3!)+4/(2!)+ .... oo = `

`e^2`

`e^(2) +1`

`e^(2) -1`

`1/4 (e^(2) +1)`

Verified by Experts

The correct Answer is:

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