यदि \(A=\{3,6,9\}\) और \(B=\{1,2,3\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि (x=3y)?
If \(A=\{3,6,9\}\) and \(B=\{1,2,3\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (x=3y)?
Explanation opens after your attempt
Correct Answer
D. (3)
Concept
The valid pairs are ((3,1),(6,2),(9,3)). While applying the condition, remember the limits of both sets.
Why this answer is correct
The correct answer is D. (3). The valid pairs are ((3,1),(6,2),(9,3)). While applying the condition, remember the limits of both sets.
Exam Tip
सही युग्म ((3,1),(6,2),(9,3)) हैं। शर्त लगाते समय दोनों समुच्चयों की सीमा याद रखें।
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