What is the Cartesian product of A = {1, 2} and B = {a, b}?
A. {(1, a), (1, b), (2, a), (b, b)}
B. {(1, 1), (2, 2), (a, a), (b, b)}
C. {(1, a), (2, a), (1, b), (2, b)}
D. {(1, 1), (a, a), (2, a), (1, b)}
Answer:A
What is the Cartesian product of A = {1, 2} and B = {a, b}?
A. {(1, a), (1, b), (2, a), (b, b)} B. {(1, 1), (2, 2), (a, a), (b, b)} C. {(1, a), (2, a), (1, b), (2, b)} D. {(1, 1), (a, a), (2, a), (1, b)}
Explanation: A subset R of the Cartesian product A x B is a relation from the set A to the set B.