\(नीचे दिए संबंध (R={(a,b):a+b\) is prime\(}) में, (A={1,2,3,4}) के लिए कौन सा युग्म अवश्य (R) में है\)?
\(For the relation (R={(a,b):a+b\) is prime\(}) with (A={1,2,3,4}), which pair definitely belongs to (R)\)?
Explanation opens after your attempt
D. ((3,4))
Concept
For ((3,4)), (3+4=7), which is prime. The other sums (4,8,6) are not prime.
Why this answer is correct
The correct answer is D. ((3,4)). For ((3,4)), (3+4=7), which is prime. The other sums (4,8,6) are not prime.
Exam Tip
((3,4)) में (3+4=7), जो prime है। बाकी दिए योग (4,8,6) prime नहीं हैं।
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