The value of sum(r=1)^(n)(""^(n)P(r))/(r...

The value of `sum_(r=1)^(n)(""^(n)P_(r))/(r!)` is

A

`2^(n)`

B

`2^(n)-1`

C

`2^(n)-1`

D

`2^(n)+1`

Text Solution

Verified by Experts

The correct Answer is:

B

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