यदि \(R=\{(1,2),(2,1)\}\) है, तो symmetric property के लिए कौन-सा कारण सही है?
If \(R=\{(1,2),(2,1)\}\), which reason supports symmetric property?
Explanation opens after your attempt
A. ( (1,2) ) के साथ ( (2,1) ) भी है( (2,1) ) is present with ( (1,2) )
Concept
In symmetric relation, if \((a,b)\in R\), then \((b,a)\in R\) must also be present. Here both ( (1,2) ) and ( (2,1) ) are present.
Why this answer is correct
The correct answer is A. ( (1,2) ) के साथ ( (2,1) ) भी है / ( (2,1) ) is present with ( (1,2) ). In symmetric relation, if \((a,b)\in R\), then \((b,a)\in R\) must also be present. Here both ( (1,2) ) and ( (2,1) ) are present.
Exam Tip
Symmetric में \((a,b)\in R\) हो तो \((b,a)\in R\) भी चाहिए। यहाँ ( (1,2) ) और ( (2,1) ) दोनों हैं।
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