If G = {7, 8} and H = {5, 4, 2], find G×H and H×G.
Here G = {7, 8} and H = {5, 4, 2}
∴G×H={(7,5),(7,4),(7,2),(8,5),(8,4),(8,2)}
and H×G={(5,7),(5,8),(4,7),(4,8),(2,7),(2,8)}