यदि \(A=\{1,2,3,4\}\) और \(R=\{(a,b):b=a+1\}\) है, जहां \(a,b\in A\), तो कौन-सा युग्म (R) में है?
If \(A=\{1,2,3,4\}\) and \(R=\{(a,b):b=a+1\}\), where \(a,b\in A\), which pair is in (R)?
Explanation opens after your attempt
Correct Answer
B. ((2,3))
Concept
In ((2,3)), (3=2+1), and both components are in (A). ((4,5)) is wrong because \(5\notin A\).
Why this answer is correct
The correct answer is B. ((2,3)). In ((2,3)), (3=2+1), and both components are in (A). ((4,5)) is wrong because \(5\notin A\).
Exam Tip
((2,3)) में (3=2+1) और दोनों अवयव (A) में हैं। ((4,5)) गलत है क्योंकि \(5\notin A\)।
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