1) A∪t = {1, 2, 4}2) A∪A = {1, 2, 4}3) A∩B = {4}4) A × B = {(1, 3), (1, 4), (1, 5), (1, 6), (2, 3), (2, 4), (2, 5), (2, 6), (4, 3), (4, 4), (4, 5), (4, 6)}5) A \ B = {1, 2}6) A∪ = {1, 2, 4}7) A △ B = {1, 2, 3, 5, 6}
1) A∪t = {1, 2, 4}
2) A∪A = {1, 2, 4}
3) A∩B = {4}
4) A × B = {(1, 3), (1, 4), (1, 5), (1, 6), (2, 3), (2, 4), (2, 5), (2, 6), (4, 3), (4, 4), (4, 5), (4, 6)}
5) A \ B = {1, 2}
6) A∪ = {1, 2, 4}
7) A △ B = {1, 2, 3, 5, 6}