А × В = {(a, a), (a, b), (a, c), (b, a), (b, b), (b, c), (c, a), (c, b), (c, c)}

А × В = {(2, 2), (2, 5), (5, 2), (5, 5)}

А × В = {(2, a), (2, b), (2, c), (5, a), (5, b), (5, c)}

А × В = {(a, 2), (b, 2), (c, 2), (a, 5), (b, 5), (c, 5)}