\(यदि (A={1,2,3,4}) और (R={(a,b):a+b\) विषम है}) हो तो कौन सा युग्म (R) में है?
\(If (A={1,2,3,4}) and (R={(a,b):a+b\) is odd}), which pair belongs to (R)?
Explanation opens after your attempt
Correct Answer
D. \((2,3)\)
Concept
Since (2+3=5) is odd, \((2,3)\in R\). In such questions, check whether the sum is odd or even.
Why this answer is correct
The correct answer is D. \((2,3)\). Since (2+3=5) is odd, \((2,3)\in R\). In such questions, check whether the sum is odd or even.
Exam Tip
(2+3=5) विषम है इसलिए \((2,3)\in R\) है। ऐसे प्रश्नों में योग की विषमता या समता जांचें।
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