2 is a polynomial of which degree?

Degree of a polynomial is the greatest power of a variable in the polynomial equation. 

Answer: 2 is a zero-degree polynomial. 

Let's solve this step by step.

Explanation:

We know that polynomials are mathematical expressions that have some variables (mostly x). 

Now, if '2' is to be considered as a polynomial, then we do not have any variable here. 

Given that '2' is a constant number we can represent it as 2x⁰

Hence, 2 is a zero-degree polynomial.

Thus, 2 is a zero-degree polynomial.