यदि \(A=\{a,b\}\) और \(B=\{1,2\}\) हैं, तो \(A\times B\) कौन सा है?
If \(A=\{a,b\}\) and \(B=\{1,2\}\), which one is \(A\times B\)?
Explanation opens after your attempt
Correct Answer
A. ({(a,1),(a,2),(b,1),(b,2)})
Concept
In \(A\times B\), the first element comes from (A) and the second from (B). Order is very important in ordered pairs.
Why this answer is correct
The correct answer is A. ({(a,1),(a,2),(b,1),(b,2)}). In \(A\times B\), the first element comes from (A) and the second from (B). Order is very important in ordered pairs.
Exam Tip
\(A\times B\) में पहला अवयव (A) से और दूसरा (B) से आता है। क्रमित युग्म में क्रम बहुत महत्वपूर्ण है।
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