यदि \(A=\{1,2,3\}\) और \(R=\{(a,b):a+b=4\}\) है, तो (R) कौन सा है?
If \(A=\{1,2,3\}\) and \(R=\{(a,b):a+b=4\}\), which is (R)?
Explanation opens after your attempt
Correct Answer
A. ( {(1,3),(2,2),(3,1)} )
Concept
We take only those pairs from (A) whose sum is (4). Therefore ( {(1,3),(2,2),(3,1)} ) is correct.
Why this answer is correct
The correct answer is A. ( {(1,3),(2,2),(3,1)} ). We take only those pairs from (A) whose sum is (4). Therefore ( {(1,3),(2,2),(3,1)} ) is correct.
Exam Tip
समुच्चय (A) के अंदर वही युग्म लेंगे जिनका योग (4) है। इसलिए ( {(1,3),(2,2),(3,1)} ) सही है।
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