Factorial of 2 is 2 | What is a factorial of 2 ?

How to calculate the factorial of 2

Lets check the detailed answer

2! is exactly: 2

The number of trailing zeros in 2! is 0.

The number of digits in 2 factorial is 1.

The factorial of 2 is 2 calculated, through its definition, this way:

2 X 1

What is factorial of 2?

Definition of factorial of 2

The factorial is a basically a quantity which is defined for integer value 2 which is greater than or equal to 0.

The factorial is nothing but the product of all intergers which is less than or equal to n but it is greater than or equal to 1. By definition we can say that the factorial value of 0 is equal to 1. We can not have negative integers factorial as defined. We can see that factorial is the result of multiplying a sequence of descending natural numbers. We can say that factorial of 2 is calculated as 2 X 1

Factorial Formula for 2

For 2 is natural number which is greater than or equal to 1. Then we can have the formula as

2! = 2 x (2-1) X (2-2) ..... 2 X 1

• Check How many digits are there in 2 factorial?
• What is the factorial of 2?
• How many trailing zeros are in 2 factorial?
• What is the last digits of factorial of 2?

Factorial examples

Example 1:-

What is the factorial of 3?

Solution :-

We know that factorial formula for 3 is
3! = 3 × (3-1) X (3-2) X (3-3) ..... 3 X 2 X 1

So the factorial of 3 is

3! = 3 X (3-1) X (3-2) X (3-3)

3! = 3 X 2 X 1

3! = 6

Example 2:-

What is the factorial of 4?

Solution :-

We know that factorial formula for 3 is
4! = 4 × (4-1) X (4-2) X (4-3) X (4-4) ..... 4 X 3 X 2 X 1

So the factorial of 4 is

4! = 4 X (4-1) X (4-2) X (4-3) X (4-4)

4! = 4 X 3 X 2 X 1

4! = 24

Example 3:-

What is the factorial of 5?

Solution :-

We know that factorial formula for 5 is
5! = 5 × (5-1) X (5-2) X (5-3) X (5-4) X (5-5) ..... 5 X 4 X 3 X 2 X 1

So the factorial of 5 is

5! = 5 X (5-1) X (5-2) X (5-3) X (5-4) X (5-5)

5! = 5 X 4 X 3 X 2 X 1

5! = 120

Frequently Asked Questions(FAQ) for Factorial

What is the meaning of 2 factorial?

The meaning of 2 factorial is a quantity which is defined for integer value 2 which is greater than or equal to 0.

Click here for detailed meaning for for factorial of 2 .

What is the symbol of factorial?

The symbol for factorial is ! (exclamation mark).

What is the factorial of 0?

The value of factorial of 0 is 1, i.e. 0! = 1.

What is the factorial of 1?

The value of factorial of 1 is 1.

What is the factorial of 5?

The value of factorial of 5 is 120.

What is the factorial of 4?

The value of factorial of 4 is 24.

Miscellaneous factorial calculations