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If (R={(1,2),(2,1),(3,3)}), which pair is needed for symmetry because of ((1,2))?यदि (R={(1,2),(2,1),(3,3)}) हो तो ((1,2)) के कारण सममितता के लिए कौन सा युग्म चाहिए?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((2,1))((2,1))
Step 1: In a symmetric relation every pair must have its reverse pair. Step 2: The reverse of ((1,2)) is ((2,1)). Step 3: To check symmetry interchange the first and second components.चरण 1: सममित संबंध में हर युग्म का उलटा युग्म भी होना चाहिए। चरण 2: ((1,2)) का उलटा ((2,1)) है। चरण 3: सममितता में पहले और दूसरे घटक को अदल बदल कर देखें।
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