What is the value of the expression 4! (4 factorial)?

The value of the expression 4! is calculated by multiplying all whole numbers from 4 down to 1. The factorial notation "n!" represents the product of all positive integers up to n.

For 4!, the calculation goes as follows:

4! = 4 × 3 × 2 × 1 = 12 × 2 = 24.

Therefore, the result confirms that 4! equals 24, making the correct choice the option representing that value. Understanding factorials is essential in permutations, combinations, and various mathematical contexts where arrangements and selections are involved.