Question

Number of functions from Set-A containing 5 elements to a Set-B containing 4 elements is

- 4!
- 5!

Hint:

### In this question we will assume the number of functions from Set- A to be containing m elements and Set-B to be containing n elements. Using total function is we can further find the value.

## The correct answer is:

### Let number of functions from Set- A containing m elements (m=5) and Set-B containing n elements (n=4).

So, total function = n+ n+ ........m th times =

Hence, number of functions from Set-A containing 5 elements to a Set-B containing 4 elements is .

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