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One mapping is selected at random from all mappings of the set `S={1,2,3,.... n}` into itself. If the probability that the mapping is one-one is 3/32, then the value of `n` is `2` b. `3` c. `4` d. none of these

A

`(1)/(n^(n))`

B

`(1)/(n!)`

C

`(n!)/(n^(n))`

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
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