\(यदि (A={1,2,3,4,5}) पर संबंध (R={(a,b):a+b\) अभाज्य है}) हो तो कौन सा युग्म (R) में है?
\(If (A={1,2,3,4,5}) and (R={(a,b):a+b\) is prime}), which pair belongs to (R)?
Explanation opens after your attempt
A. \((1,4)\)
Concept
Since (1+4=5) is prime, \((1,4)\in R\). In such questions, first check the sum according to the condition.
Why this answer is correct
The correct answer is A. \((1,4)\). Since (1+4=5) is prime, \((1,4)\in R\). In such questions, first check the sum according to the condition.
Exam Tip
(1+4=5) अभाज्य है इसलिए \((1,4)\in R\) है। ऐसे प्रश्नों में पहले शर्त के अनुसार योग जांचें।
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