# $$$1!$$$

### Your Input

**Find $$$1!$$$**

### Solution

The factorial of a positive integer $$$n$$$ is the product of all positive integers less than or equal to $$$n$$$: $$$n! = 1 \cdot 2 \cdot \ldots \cdot (n-1) \cdot n$$$.

Thus, $$$1! = 1 = 1$$$.

### Answer

**$$$1! = 1$$$A**