Final answer:
The Cartesian product of {1, 2} and {3, 4} is {(1, 3), (1, 4), (2, 3), (2, 4)}.
Step-by-step explanation:
The Cartesian product of two sets is a set that contains all possible ordered pairs where the first element comes from the first set and the second element comes from the second set. In this case, the first set is {1, 2} and the second set is {3, 4}.
The Cartesian product of {1, 2} and {3, 4} is {(1, 3), (1, 4), (2, 3), (2, 4)}. Each ordered pair represents a possible combination of an element from the first set with an element from the second set.