यदि \(A=\{1,2,3\}\) और \(B=\{4,5\}\) हैं, तो \(A\times B\) का उपसमुच्चय \(R=\{(x,y):x+y=7\}\) क्या है?
If \(A=\{1,2,3\}\) and \(B=\{4,5\}\), what is the subset \(R=\{(x,y):x+y=7\}\) of \(A\times B\)?
Explanation opens after your attempt
A. ({(2,5),(3,4)})
Concept
Since (2+5=7) and (3+4=7), these pairs belong to (R). Think of all pairs in \(A\times B\) before filtering.
Why this answer is correct
The correct answer is A. ({(2,5),(3,4)}). Since (2+5=7) and (3+4=7), these pairs belong to (R). Think of all pairs in \(A\times B\) before filtering.
Exam Tip
(2+5=7) और (3+4=7), इसलिए यही युग्म आते हैं। संबंध बनाने से पहले पूरा \(A\times B\) सोचें।
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