alleryLet A = {1, 2} and B = {3, 4}. The number of subsets of A × B is:
A16
B32
C8
D4
Answer & Solution
Correct answer: A. 16
A × B has 4 elements.
Number of subsets = 2^4 = 16 (this is also the number of possible relations from A to B).
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