यदि \(A=\{1,2\}\) और \(R=\{(1,2),(2,1)\}\) है, तो \(R^{-1}\) कैसा है?
If \(A=\{1,2\}\) and \(R=\{(1,2),(2,1)\}\), what is \(R^{-1}\)?
Explanation opens after your attempt
Correct Answer
A. \(R^{-1}=R\)
Concept
On reversing both pairs, we get the same set again. Hence \(R^{-1}=R\).
Why this answer is correct
The correct answer is A. \(R^{-1}=R\). On reversing both pairs, we get the same set again. Hence \(R^{-1}=R\).
Exam Tip
दोनों युग्म उलटने पर फिर वही समुच्चय मिलता है। इसलिए \(R^{-1}=R\)।
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