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Relations

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Which of the following is a relation on the set {1, 2, 3}?

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A
{(1, 2), (2, 3), (3, 1)}
💡 Explanation:

A relation on a set is a subset of the Cartesian product of the set with itself. In this case, the relation is {(1, 2), (2, 3), (3, 1)} because it is a subset of the Cartesian product {(1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3)}.

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