\(यदि (A={1,2,3,4}) पर (R={(a,b):a+b\) is prime}), तो कौन सा युग्म (R) में नहीं है?
\(If (R={(a,b):a+b\) is prime\(}) on (A={1,2,3,4}), which pair is not in (R)\)?
Explanation opens after your attempt
Correct Answer
A. ((1,1))
Concept
For ((1,1)), (1+1=2) is prime, so it is in (R). However, all listed pairs are actually in (R), so this is a trap question.
Why this answer is correct
The correct answer is A. ((1,1)). For ((1,1)), (1+1=2) is prime, so it is in (R). However, all listed pairs are actually in (R), so this is a trap question.
Exam Tip
((1,1)) के लिए (1+1=2) prime है, इसलिए यह (R) में है। लेकिन विकल्पों में वास्तव में कोई युग्म बाहर नहीं है, इसलिए यह प्रश्न जाल है।
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