Given a set (in Description below), what are the range and domain of g?

Question

Let X be the set {1, 2, 5, 6, 7} and Y be the set {7, 3, 9, 8, 6}.

Unary function f : X→Y

Binary function g : X ×Y →Y

What are the range and domain of g?

Answer 1

The range of g is Y as in g : X ×Y →Y

The domain of g is X x Y as in g : X ×Y →Y

Do you know how to find X x Y?