यदि \(A=\{1,2\}\), \(B=\{2,3\}\) हैं, तो \(A\times B\cap B\times A\) में कौन सा युग्म होगा?
If \(A=\{1,2\}\), \(B=\{2,3\}\), which pair belongs to \(A\times B\cap B\times A\)?
Explanation opens after your attempt
Correct Answer
A. ((2,2))
Concept
((2,2)) is in both \(A\times B\) and \(B\times A\). For intersection, the pair must belong to both sets.
Why this answer is correct
The correct answer is A. ((2,2)). ((2,2)) is in both \(A\times B\) and \(B\times A\). For intersection, the pair must belong to both sets.
Exam Tip
((2,2)) दोनों \(A\times B\) और \(B\times A\) में है। प्रतिच्छेद के लिए युग्म दोनों समुच्चयों में होना चाहिए।
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