यदि \(A=\{1,2,3\}\) और \(R=\{(a,b):a+b=4\}\), जहां \(a,b\in A\), तो (R) का सही रूप क्या है?
If \(A=\{1,2,3\}\) and \(R=\{(a,b):a+b=4\}\), where \(a,b\in A\), what is the correct form of (R)?
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Correct Answer
A. ({(1,3),(2,2),(3,1)})
Concept
The pairs whose sum is (4) are ((1,3),(2,2),(3,1)). In such questions, check all possible pairs systematically.
Why this answer is correct
The correct answer is A. ({(1,3),(2,2),(3,1)}). The pairs whose sum is (4) are ((1,3),(2,2),(3,1)). In such questions, check all possible pairs systematically.
Exam Tip
जिन युग्मों का योग (4) है वे ((1,3),(2,2),(3,1)) हैं। ऐसे प्रश्नों में सभी संभावित युग्म व्यवस्थित रूप से जांचें।
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