यदि \(X=\{1,5\}\) और \(Y=\{3,9\}\) हैं, तो कौन सा युग्म \(X\times Y\) में नहीं है?
If \(X=\{1,5\}\) and \(Y=\{3,9\}\), which pair is not in \(X\times Y\)?
Explanation opens after your attempt
D. ((3,1))
Concept
In ((3,1)), the first component is (3), but \(3\notin X\). Check the first and second positions separately for membership.
Why this answer is correct
The correct answer is D. ((3,1)). In ((3,1)), the first component is (3), but \(3\notin X\). Check the first and second positions separately for membership.
Exam Tip
((3,1)) में पहला घटक (3) है, लेकिन \(3\notin X\)। सदस्यता जांचते समय पहला और दूसरा स्थान अलग-अलग देखें।
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