| Advanced Math |
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| Question : |
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What is a 'Factorial' ? |
Answer : |
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Factorial is the product of all positive integers from 1 upto a given number n, inclusive. |
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Factorial is denoted by the
symbol n ! |
For example:
5 ! = 1 x 2 x 3 x 4 x 5 = 120 |
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The special case 0! is defined to have value 0! = 1. |
The Factorial function can be defined as:
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Some applications of factorials:
Factorials are used in combinatorics.
Factorials turn up in calculus.
Factorials are used in probability theory. |
