Question

why 0 ! = 1



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Answer 1

Step-by-step explanation:

Simple “Proof” Why Zero Factorial is Equal to One

For the equation to be true, we must force the value of zero factorial to equal 1, and no other. ... So yes, 0! = 1 is correct because mathematicians agreed to define it that way (nothing more and nothing less) in order to be consistent with the rest of mathematics.

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