यदि \(A=\{1,2,3\}\) और \(B=\{1,4,9\}\), \(R=\{(x,y):y=x^2\}\) है, तो कौन-सा युग्म (R) में नहीं है?
If \(A=\{1,2,3\}\), \(B=\{1,4,9\}\), and \(R=\{(x,y):y=x^2\}\), which pair is not in (R)?
Explanation opens after your attempt
Correct Answer
D. ((2,9))
Concept
The pair ((2,9)) is wrong because \(2^2=4\), not (9). In rule-based relations, apply the given formula directly.
Why this answer is correct
The correct answer is D. ((2,9)). The pair ((2,9)) is wrong because \(2^2=4\), not (9). In rule-based relations, apply the given formula directly.
Exam Tip
((2,9)) गलत है क्योंकि \(2^2=4\), (9) नहीं। नियम आधारित संबंधों में दिए गए सूत्र को सीधे लगाएं।
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