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Question
If P = {1, 2, 3) and Q = {1, 4}, find sets P × Q and Q × P
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Solution
P = {1, 2, 3), Q = {1, 4}
∴ P × Q = {(1, 1), (1, 4), (2, 1), (2, 4), (3, 1), (3, 4)}
and Q × P = {(1, 1), (1, 2), (1, 3), (4, 1), (4, 2), (4, 3)}.
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