# What is 29 factorial ?

Steps to calculate factorial of 29

## How to calculate the factorial of 29

To find 29 factorial, or 29!, simply use the formula that multiplies the number 29 by all positive whole numbers less than it.

Let's look at how to calculate the Factorial of Twenty-nine :

29! is exactly : 8841761993739701954543616000000

Factorial of 29 can be calculated as:
29! = 29 x 28 x 27 x 26 x ... x 3 x 2 x 1

The number of trailing zeros in 29! is 6

The number of digits in 29 factorial is 31.

## What Is Factorial?

A factorial is symbolized by an integer and an exclamation mark. In arithmetic, factorial is a multiplication process of natural numbers .

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

Symbolically, it is represented as "!".

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

## Factorial Formula

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

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

The expansion of the formula gives the numbers to be multiplied together to get the factorial of the number.

We can also determine 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 :
29! Factorial = 29 x 28 x 27 x 26 x ... x 3 x 2 x 1 = 29 × 28! = 8841761993739701954543616000000

## 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

### Can we have factorials for negative numbers ?

Negative integer factorials are undefined

### What Is 0!

Zero factorial or Factorial of 0 is simple, and its own value is corresponding to 1. So, 0! = 1.