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प्रश्न
Choose the correct alternative:
Let X = {1, 2, 3, 4} and R = {(1, 1), (1, 2), (1, 3), (2, 2), (3, 3), (2, 1), (3, 1), (1, 4), (4, 1)}. Then R is
पर्याय
reflexive
symmetric
transitive
equivalence
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उत्तर
symmetric
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