यदि \(A=\{1,2,4\}\) और \(B=\{1,4,16\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि \(y=x^2\)?
If \(A=\{1,2,4\}\) and \(B=\{1,4,16\}\), how many pairs ((x,y)) in \(A\times B\) satisfy \(y=x^2\)?
Explanation opens after your attempt
B. (3)
Concept
The valid pairs are ((1,1),(2,4),(4,16)). Applying a condition to a Cartesian product forms a relation.
Why this answer is correct
The correct answer is B. (3). The valid pairs are ((1,1),(2,4),(4,16)). Applying a condition to a Cartesian product forms a relation.
Exam Tip
सही युग्म ((1,1),(2,4),(4,16)) हैं। कार्तीय गुणन पर शर्त लगाने से संबंध बनता है।
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