Evaluate the following expression. $6 !$ Answer How to enter your answer (opens in new window)

Step 1 ：The factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. So, to find 6!, we need to multiply all the positive integers from 1 to 6.

Step 2 ：The value of $6 !$ is \(\boxed{720}\).