यदि \(A=\{1,2\}\) और \(B=\{1,2\}\) हैं, तो \(A\times B\) में कौन सा युग्म अवश्य होगा?
If \(A=\{1,2\}\) and \(B=\{1,2\}\), which pair must be in \(A\times B\)?
Explanation opens after your attempt
Correct Answer
A. ((2,2))
Concept
Both entries are from their respective sets, so ((2,2)) is included. An ordered pair with equal entries is also valid.
Why this answer is correct
The correct answer is A. ((2,2)). Both entries are from their respective sets, so ((2,2)) is included. An ordered pair with equal entries is also valid.
Exam Tip
दोनों स्थानों पर अवयव अपने संबंधित समुच्चय से हैं, इसलिए ((2,2)) शामिल है। समान अवयव वाला क्रमित युग्म भी मान्य होता है।
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