यदि \(R=\{(1,2)\}\) है, तो (R) symmetric क्यों नहीं है?

If \(R=\{(1,2)\}\), why is (R) not symmetric?

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Correct Answer

B. ( (2,1) ) missing है( (2,1) ) is missing

Explanation

Simple Explanation

\((1,2)\in R\) है लेकिन उल्टा pair ( (2,1) ) नहीं है। Symmetric के लिए reverse pair जरूरी है। / Here \((1,2)\in R\), but the reverse pair ( (2,1) ) is absent. A reverse pair is necessary for symmetry.

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(R=\{(1,2)\}\) है, तो (R) symmetric क्यों नहीं है? / If \(R=\{(1,2)\}\), why is (R) not symmetric?

Correct Answer: B. ( (2,1) ) missing है / ( (2,1) ) is missing. Explanation: \((1,2)\in R\) है लेकिन उल्टा pair ( (2,1) ) नहीं है। Symmetric के लिए reverse pair जरूरी है। / Here \((1,2)\in R\), but the reverse pair ( (2,1) ) is absent. A reverse pair is necessary for symmetry.