it is a binomial therom concept plz give prove for 0! is equal to 1

As we can write n! = n{(n-1)!}. So !1 can be written as 1{0!} =1!. Therefore 0! = 1!/1 = 1.Hope it clears. If still u have doubts then please clarify. If u like answer then please approve the answer.

The dimensions of this expression is n>0 so you can`t put n=0. Hope now it clears. If still u have doubts then please clarify. If u like answer then please approve the answer.

Sorry for mistyping it is domain not dimensions.Hope it clears. If still u have doubts then please clarify. If u like answer then please approve the answer.