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What Is A Factorial Of 0? [Solved]

Factorial of a number in mathematics is the product of all the positive numbers less than or equal to a number. But there are no positive values less than zero so the data set cannot be arranged which counts as the possible combination of how data can be arranged (it cannot). Thus, 0! = 1.

Zero Factorial - Numberphile

Regarding the equation at the end - James says it should be e^-t dt NOT e^-n dn … sorry for the mix-up! NUMBERPHILE Website: …

Why is 0! = 1?

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Why 0 factorial is equal to 1

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