समुच्चय \(A=\{1,2,3\}\) पर \(R=\{(1,1),(2,2),(1,2),(2,1)\}\) संबंध प्रतिवर्ती क्यों नहीं है?
On \(A=\{1,2,3\}\), why is \(R=\{(1,1),(2,2),(1,2),(2,1)\}\) not reflexive?
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Correct Answer
A. क्योंकि ((3,3)) अनुपस्थित हैBecause ((3,3)) is absent
Concept
A reflexive relation must contain \((a,a)\in R\) for every \(a\in A\). Here ((3,3)) is missing.
Why this answer is correct
The correct answer is A. क्योंकि ((3,3)) अनुपस्थित है / Because ((3,3)) is absent. A reflexive relation must contain \((a,a)\in R\) for every \(a\in A\). Here ((3,3)) is missing.
Exam Tip
प्रतिवर्ती संबंध में हर \(a\in A\) के लिए \((a,a)\in R\) होना चाहिए। यहां ((3,3)) नहीं है।
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