factorial of n numbers using c# lambda..?

Question

I just started playing with lambdas and Linq expression for self learning. I took the simple factorial problem for this. with the little complex scenario where find the fact

Answer 1

Simple although no recursion here:

public static int Factorial(this int count)
{
        return count == 0
                   ? 1
                   : Enumerable.Range(1, count).Aggregate((i, j) => i*j);
}

3.Factorial() == 6