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If (R={(1,2)}), why is (R) not symmetric?यदि (R={(1,2)}) है, तो (R) सममित क्यों नहीं है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((2,1)) is absent((2,1)) अनुपस्थित है
Step 1: Symmetry requires the reverse of every ordered pair. Step 2: Here ((1,2)) is present but ((2,1)) is missing. Step 3: Do not check only diagonal pairs; focus on reverse pairs.चरण 1: सममितता के लिए हर युग्म का उलटा युग्म चाहिए। चरण 2: यहाँ ((1,2)) है लेकिन ((2,1)) नहीं है। चरण 3: केवल विकर्ण युग्म न देखकर उलटे युग्मों पर ध्यान दें।
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