The expression you've written, $\frac{n}{n-2!}$, contains a factorial. Let's break it down:

1. Factorial: The factorial of a number $x$, denoted $x!$, is the product of all positive integers up to $x$. For example:

   • $2! = 2 \times 1 = 2$

2. Expression: You are dividing $n$ by $n - 2!$, which simplifies to: $\frac{n}{n - 2!} = \frac{n}{n - 2}$

This means the expression simplifies to $\frac{n}{n - 2}$, where the factorial $2! = 2$.

Let me know if you'd like more details, or if this clears things up! Here are five related questions for further exploration:

1. What is the result of $\frac{n}{n - k!}$ for different values of $k$?
2. How do you compute larger factorials, such as $5!$ or $7!$?
3. What happens if $n = 2$ in your original expression?
4. How can you apply factorials in probability problems?
5. How does the factorial function behave as $n$ approaches infinity?

Tip: When using factorials, always ensure that the input is a non-negative integer, as the factorial function is only defined for such numbers.