यदि \(A=\{1,2,3\}\) और \(B=\{1,2,3\}\) हैं, तो \(A\times B\) के उपसमुच्चय \(R=\{(a,b):a+b=4\}\) में कितने अवयव हैं?
If \(A=\{1,2,3\}\) and \(B=\{1,2,3\}\), how many elements are in the subset \(R=\{(a,b):a+b=4\}\) of \(A\times B\)?
Explanation opens after your attempt
Correct Answer
B. (3)
Concept
The condition gives ((1,3),(2,2),(3,1)), so there are (3) elements. A relation is a selected part of \(A\times B\).
Why this answer is correct
The correct answer is B. (3). The condition gives ((1,3),(2,2),(3,1)), so there are (3) elements. A relation is a selected part of \(A\times B\).
Exam Tip
शर्त से ((1,3),(2,2),(3,1)) मिलते हैं, इसलिए (3) अवयव हैं। संबंध \(A\times B\) का चुना हुआ भाग होता है।
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