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Factorials are a mathematics application used for combinations and permutations. The real world application of factorials are used to find the probability of certain things.

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Q: When would one use factorials?

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There are mathematics forums online where one can ask questions on factorials or one can read information on factorials. Examples of forums are the "Math Forum" and "Math is Fun" forum.

For any pair of factorials, a! / a-1! = a. In this instance: 42! / 41! = 42

YES!

by using the Gamma method apparently...:)

No, because division is not an associative operation.

No. Simple permutations are composed of 2 factorials.

No. Factorials can only be placed on positive whole numbers or 0. For example, 0!, 1!, and 6! are all fine, but 2.5! and (-1)! are not. Since factorials can only be placed on whole numbers, that means you will only be multiplying whole numbers. 100! = 100 * 99 * 98 ... * 1; all those numbers are whole numbers, meaning your answer will be a whole number.

They are 13.

There is no simple method. And it gets more difficult as you increase the number of permitted operations: powers, factorials and so on.

0!=1! 1=1 The factorial of 0 is 1, not 0

Without using exponents or factorials, that's it.

Probably 222= 4,194,304Of course, you could add a string of factorials to make the number incredibly huge, but then there is no limit222!! for example, or 222!!! and so on.Probably 222= 4,194,304Of course, you could add a string of factorials to make the number incredibly huge, but then there is no limit222!! for example, or 222!!! and so on.Probably 222= 4,194,304Of course, you could add a string of factorials to make the number incredibly huge, but then there is no limit222!! for example, or 222!!! and so on.Probably 222= 4,194,304Of course, you could add a string of factorials to make the number incredibly huge, but then there is no limit222!! for example, or 222!!! and so on.

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