Даны множества A = {a, b, c}, B = {1, 2}, C = {2, 3, 4}.
Запишите множества А × В; А × С и В × С.
- A × B = {(a, 1), (a, 2), (b, 2), (c, 1), (c, 2)}.
A × C = {(a, 2), (a, 3), (a, 4), (b, 2), (c, 2), (c, 3), (c, 4)}.
B × C = {(1, 2), (1, 3), (1, 4), (2, 2), (2, 3), (2, 4)}.
- A × B = {(a, 1), (a, 2), (b, 1), (b, 2), (c, 1), (c, 2)}.
A × C = {(a, 2), (a, 3), (a, 4), (b, 2), (b, 3), (b, 4), (c, 2), (c, 3), (c, 4)}.
B × C = {(1, 2), (1, 3), (1, 4), (2, 2), (2, 3), (2, 4)}.
- A × B = {(a, 1), (a, 2), (b, 1), (b, 2), (c, 1), (c, 2), (a, a)}.
A × C = {(a, 2), (a, 3), (a, 4), (b, 2), (b, 3), (b, 4), (c, 2), (c, 3), (c, 4), (a, c)}.
B × C = {(1, 2), (1, 3), (1, 4), (2, 2), (2, 3), (2, 4)}.