The exact factorial of 9 is:
📌 Number of digits in the exact factorial of 9! = 6.
Approximately, the value of 9! can also be written as 362880.
How to calculate 9!
The formula for finding the factorial of a number is:
n! = n × (n-1) × (n-2) × … × 2 × 1
The same formula can also be written in terms of PI product notation as:
So, by definition, 9! is calculated as:
9 × 8 × 7 × … × 2 × 1
Frequently asked questions
Here are some frequently asked questions about factorial of 9:
How many digits are there in the exact value of 9!?
There are 6 digits in the exact value of 9!.
What is the value of 9 factorial in terms of E?
The value of 9! in terms of E is 362880.
What are the uses of factorials?
According to Wikipedia:
In mathematical analysis, factorials are used in power series for the exponential function and other functions, and they also have applications in algebra, number theory, probability theory, and computer science.