Question

can you tell me why 0! = 1 ?​

Answer 1

Answer:

We can't define, Because, 1! = 1 and 0! = 1

THEREFORE, 0 is not equal to 1

If u can prove 0 = 1 then u can prove that 0!= 1

Answer 2

Step-by-step explanation:

$0! = 1 \\ \\ let \\ \\ n! = n(n - 1)! \\ \\ put \: n = 1 \\ \\ 1! = 1(1 - 1)! \\ \\ 1! = 1(0)! \\ \\ 1 = 0! \\ \\ hence \: proved$