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On (A={1,2,3,4}), (R={(1,2),(2,1),(3,4)}). Which pair is needed to make it symmetric?समुच्चय (A={1,2,3,4}) पर (R={(1,2),(2,1),(3,4)}) है। सममित बनाने के लिए कौन-सा युग्म चाहिए?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((4,3))((4,3))
Step 1: The pair ((1,2)) is already matched by ((2,1)). Step 2: The reverse of ((3,4)), which is ((4,3)), is missing. Step 3: Adding the reverse of the incomplete pair will make the relation symmetric.चरण 1: ((1,2)) और ((2,1)) का जोड़ा पूरा है। चरण 2: ((3,4)) का उल्टा ((4,3)) अभी नहीं है। चरण 3: अधूरे युग्म का उल्टा जोड़ने से संबंध सममित हो जाएगा।
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