0!=1! is it 成立?

0!=1! is it 成立?
yes.it is an identity
proof :
nC0 = n! / [(n!)(0!)]
as nC0 = 1
n! / [(n!)(0!)] = 1
0! = 1
also,
1! = 1
so,0! = 1!

To answer this question , we should know about '!'.
n!=1*2*3*4.....*(n-1)*n

because, 0!=0 1!=1
so, 0! not equal to 1!