What is 4 factorial ?

Steps to calculate factorial of 4

How to calculate the factorial of 4

To find 4 factorial, or 4!, simply use the formula that multiplies the number 4 by all positive whole numbers less than it.

Let's look at how to calculate the Factorial of Four :

  4! is exactly : 24

  Factorial of 4 can be calculated as:
4! = 4 x 3 x 2 x 1

  The number of trailing zeros in 4! is 0

  The number of digits in 4 factorial is 2.

What Is Factorial?

A factorial is represented by an integer and an exclamation mark. In Mathematics, factorial is a multiplication function of natural numbers .

It multiplies the number by every natural number that is less than it .

Symbolically, it is listed as "!".

The function is used, among other things, to find the "n" way items can be established .

Factorial Formula

To find the factorial of any given number, substitute the value for n in the given solution :

n! = n × (n-1) × (n-2) × (n-3) × ….× 3 × 2 × 1

The expansion of the formula provides the numbers to be multiplied at the same time to receive the factorial of the number.

We can also measure a factorial from the previous one. The factorial of any number is that number times the factorial of (that number minus 1).

So the rule is : n! = n × (n−1)!

Example :
4! Factorial = 4 x 3 x 2 x 1 = 4 × 3! = 24

What are Factorials Used For?

The best use of factorial is in Combinations and Permutations.

Example : Determine how to arrange letters without repeating?

There one way for 1 letter "a":
2 ways for two letters "ab": ab, ba.
There are 6 ways for 3 letters "abc": abc acb cab bac bca.
There are 24 ways for 1234 of the letters "abcd"

Frequently Asked Questions on Factorial

1) Can we have factorials for negative numbers ?
  Negative integer factorials are undefined

2) What Is 0!
 Zero factorial or Factorial of 0 is simple, and its own value is equal to 1. So, 0! = 1.

Other conversions of the number 4