यदि \(A=\{1,2,3\}\) और \(B=\{1,2,3\}\) हैं, तो \(A\times B\) में समान घटक वाले कितने युग्म होंगे?
If \(A=\{1,2,3\}\) and \(B=\{1,2,3\}\), how many pairs in \(A\times B\) have equal components?
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Correct Answer
B. (3)
Concept
The equal-component pairs are ((1,1),(2,2),(3,3)). In such questions, do not count all (9) pairs; count only the required condition.
Why this answer is correct
The correct answer is B. (3). The equal-component pairs are ((1,1),(2,2),(3,3)). In such questions, do not count all (9) pairs; count only the required condition.
Exam Tip
समान घटक वाले युग्म ((1,1),(2,2),(3,3)) हैं। ऐसे प्रश्न में पूरी संख्या (9) नहीं, केवल मांगी गई शर्त गिनें।
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