यदि \(A=\{1,2,3\}\) और \(B=\{x,y\}\), तो कौन सा समुच्चय \(A\times B\) का उपसमुच्चय नहीं है?
If \(A=\{1,2,3\}\) and \(B=\{x,y\}\), which set is not a subset of \(A\times B\)?
Explanation opens after your attempt
Correct Answer
C. ({(x,1)})
Concept
In \(A\times B\), the first coordinate must be from (A) and the second from (B). In ((x,1)), the order is reversed, so it is not a member.
Why this answer is correct
The correct answer is C. ({(x,1)}). In \(A\times B\), the first coordinate must be from (A) and the second from (B). In ((x,1)), the order is reversed, so it is not a member.
Exam Tip
\(A\times B\) में पहला घटक (A) से और दूसरा (B) से होना चाहिए। ((x,1)) में क्रम उल्टा है, इसलिए यह सदस्य नहीं है।
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