Question

prove 0factorial= 1 pls give me a correct one and don't waste my point​

Answer 1

Answer:

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.

Answer 2

Answer:

This will still be counted as a way of arranging it, so by definition, a zero factorial will be equal to one, just as 1! is equal to one because we see that there is only a single possible arrangement of this data set.

Explanation:

n! = n × ( n-1)

1! = 1 × (1 - 1)!

1! = 1 x 0!

1 = 0!