यदि \(A=\{1,2,3\}\) और \(R=\{(a,b):a\mid b\}\), जहां \(a,b\in A\), तो कौन-सा युग्म (R) में नहीं है?
If \(A=\{1,2,3\}\) and \(R=\{(a,b):a\mid b\}\), where \(a,b\in A\), which pair is not in (R)?
Explanation opens after your attempt
Correct Answer
D. ((2,3))
Concept
The pair ((2,3)) is wrong because (2) does not divide (3). In divisibility relations, the remainder must be zero.
Why this answer is correct
The correct answer is D. ((2,3)). The pair ((2,3)) is wrong because (2) does not divide (3). In divisibility relations, the remainder must be zero.
Exam Tip
((2,3)) गलत है क्योंकि (2) संख्या (3) को विभाजित नहीं करती। विभाज्यता संबंध में शेषफल शून्य होना चाहिए।
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