(1, 2, 3)
(1, 3, 4)
(2, 3)
(1, 3)
(1, 4)
Correct answer is B
U = {1,2,3,4}; P = {2,3}; Q = {2,4}; P∩Q = {2} (P∩Q)' = {1,3,4}
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