Question

What is the Cartesian product of A= {l, 2} and B= {a, b}?

Options

• {(l, a), (1, b), (2, a), (b, b)}

• {(1, 1), (2, 2), (a, a), (b, b)}

• {(1, a), (2, a), (1, b), (2, b)}

• {(l, 1), (a, a), (2, a), (1, b)}

Answer 1

{(1, a), (2, a), (1, b), (2, b)}

Explanation:

A = {1, 2}, B = {a, b}

Cartesian product of A and B,

A × B = {1, 2} × {a, b} = {(1, a), (2, a), (1, b), (2, b)}