यदि \(A=\{2,4,8\}\) और \(B=\{1,2,4\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि \(\frac{x}{y}=2\)?
If \(A=\{2,4,8\}\) and \(B=\{1,2,4\}\), how many pairs ((x,y)) in \(A\times B\) satisfy \(\frac{x}{y}=2\)?
Explanation opens after your attempt
A. (3)
Concept
The valid pairs are ((2,1),(4,2),(8,4)). In a fraction condition, take (y) only from set (B).
Why this answer is correct
The correct answer is A. (3). The valid pairs are ((2,1),(4,2),(8,4)). In a fraction condition, take (y) only from set (B).
Exam Tip
सही युग्म ((2,1),(4,2),(8,4)) हैं। भिन्न वाली शर्त में (y) का मान समुच्चय (B) से ही लें।
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