If P = {1, 2, 3, 4, 5} and Q = {2, 4, 6, 8}, find P ∩ Q.
A{1, 2, 3, 4, 5, 6, 8}
B{2, 4}CORRECT
C{1, 3, 5, 6, 8}
D{6, 8}
GCEFurther MathematicsSets and Binary Operations2024
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Why the answer is B, and why the others tempt you.
The intersection P ∩ Q contains elements that belong to both P and Q. The elements common to both sets are 2 and 4, so P ∩ Q = {2, 4}. Option A is the union, option C is the symmetric difference, and option D contains elements only in Q.
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