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Question: There are n letters and n addressed envelops. The probability that each letter takes place in right ...

There are n letters and n addressed envelops. The probability that each letter takes place in right envelop is

A

1n!\frac { 1 } { n ! }

B

1(n−1)!\frac { 1 } { ( n - 1 ) ! }

C

1−1n!1 - \frac { 1 } { n ! }

D

None of these

Answer

1n!\frac { 1 } { n ! }

Explanation

Solution

It is a fundamental concept.