यदि \(A=\{1,2,3\}\) और \(B=\{1,4,9,16\}\), तो relation \(R=\{(x,y):y=x^2,\ x\in A,\ y\in B\}\) में कितने ordered pairs होंगे?
If \(A=\{1,2,3\}\) and \(B=\{1,4,9,16\}\), how many ordered pairs are in \(R=\{(x,y):y=x^2,\ x\in A,\ y\in B\}\)?
Explanation opens after your attempt
A. (3)
Concept
For (x=1,2,3), pairs are ((1,1),(2,4),(3,9)). In rule-based relations, substitute domain values systematically.
Why this answer is correct
The correct answer is A. (3). For (x=1,2,3), pairs are ((1,1),(2,4),(3,9)). In rule-based relations, substitute domain values systematically.
Exam Tip
(x=1,2,3) के लिए pairs ((1,1),(2,4),(3,9)) मिलते हैं। rule relation में domain values को systematically substitute करें।
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