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190 LearnersLast updated on December 11, 2025
Factorial of -2
What is the Factorial of -2?
The factorial of a number is denoted by an exclamation mark (!) after it.
If n is a non-negative integer, then: n! = n × (n - 1) × (n - 2) × ... × 3 × 2 × 1
However, factorials are not defined for negative numbers in standard arithmetic.
Therefore, the factorial of -2 is undefined.
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Important Glossaries of Factorial of -2
- Factorial: The process of multiplying a number by all the natural numbers smaller than itself. It is denoted by an exclamation mark (!). However, it is defined only for non-negative integers.
- Undefined: A term used in mathematics to indicate that a particular operation or expression does not have a valid result.
- Non-negative integers: Whole numbers that are greater than or equal to zero (0, 1, 2, 3, ...).
- Natural numbers: Counting numbers starting from 1, 2, 3, and so on. Note that this does not include zero or negative numbers.
- Mathematical function: A relation that uniquely associates members of one set with members of another set, often represented by formulas or equations. In this context, the factorial is a function applied to non-negative integers.
Vikrant Sharma
About the Author
Vikrant is a passionate Mathematics teacher with over 5 years of teaching experience in both conventional and Vedic Maths. His student-focused approach combines clear concepts with motivation and encouragement, helping students build confidence and develo
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