How is 0! (zero factorial) equal to 1 (mathematical proof)?

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asked Dec 19, 2022 3.1k views

2 Answers

Tareq · Answer 1 · 2022-12-21T02:27:30+0000

Because while doing n!, you first start writting the number n then count down until you reach the writting 1

That's why, even if its 0! you still write the number 1.

Mollo · Answer 2 · 2022-12-25T16:36:59+0000

Answer:

What it means is that you first start writing the whole number n then count down until you reach the whole number 1. For the equation to be true, you must force the value of zero factorial to equal 1, and no other. ...

Explanation:

How is 0! (zero factorial) equal to 1 (mathematical proof)?

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