यदि \(A=\{1,2,4\}\) और \(B=\{2,4,6\}\) हैं, तो \(A\times B\cap B\times A\) में कितने युग्म होंगे?
If \(A=\{1,2,4\}\) and \(B=\{2,4,6\}\), how many pairs are in \(A\times B\cap B\times A\)?
Explanation opens after your attempt
Correct Answer
B. (4)
Concept
The common pairs are ((2,2),(2,4),(4,2),(4,4)). In intersection, the whole ordered pair must belong to both sets.
Why this answer is correct
The correct answer is B. (4). The common pairs are ((2,2),(2,4),(4,2),(4,4)). In intersection, the whole ordered pair must belong to both sets.
Exam Tip
साझा युग्म ((2,2),(2,4),(4,2),(4,4)) हैं। प्रतिच्छेद में पूरा क्रमित युग्म दोनों समुच्चयों में होना चाहिए।
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