Question: P = {a, b}, A = {2, 3, 4} B = {4, 5, 6} `P xx (A - B)` = কত?
A{(2, a), (2, b), (3, a), (3, b)}
B{(a, 2), (a, 3), (a, 4), (b, 2), (b, 3), (b, 4)}
C{(2, a), (2, b), (3, a), (3, b), (4, a), (4, b)}
D{(a, 2), (a, 3), (b, 2), (b, 3)}
Note: A - B = {2, 3, 4} - {4, 5, 6} = {2, 3}
:.` p xx (A - B) = {a, b} xx {2, 3} = {(a, 2), (a, 3), (b, 2), (b, 3)}`