यदि \(A=\{2,3,4\}\) और \(B=\{3,4,5\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि (x=y)?
If \(A=\{2,3,4\}\) and \(B=\{3,4,5\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (x=y)?
Explanation opens after your attempt
B. (2)
Concept
The valid pairs are ((3,3)) and ((4,4)). Such pairs are formed from elements of \(A\cap B\).
Why this answer is correct
The correct answer is B. (2). The valid pairs are ((3,3)) and ((4,4)). Such pairs are formed from elements of \(A\cap B\).
Exam Tip
सही युग्म ((3,3)) और ((4,4)) हैं। ऐसे युग्म \(A\cap B\) के अवयवों से बनते हैं।
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