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There are n letters and n addressed e...

There are `n` letters and `n` addressed envelopes. Find the probability that all the letters are not kept in the right envelope.

A

`(1)/(n!)`

B

`1-(1)/(n!)`

C

`1-(1)/(n)`

D

`(1)/(2!) - (1)/(3!) +……+((-1)^(n))/(n!)`

Text Solution

Verified by Experts

The correct Answer is:
B
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