Class 11

Math

Co-ordinate Geometry

Straight Lines

One mapping is selected at randon from all mappings of the set $S={1,2,3,.....,n}$ into itself. If the probability that mapping is one-one is $3/32$ then the value of $n$ is

- $2$
- $3$
- $4$
- None of these

**Correct Answer: ** Option(c)