यदि \(A=\{a,b,c\}\) और \(B=\{1,2\}\) है, तो \(B\times A\) में कौन सा युग्म होगा?
If \(A=\{a,b,c\}\) and \(B=\{1,2\}\), which pair belongs to \(B\times A\)?
Explanation opens after your attempt
Correct Answer
B. ( (1,a) )
Concept
In \(B\times A\), the first coordinate comes from (B) and the second from (A). Hence ((1,a)) is correct.
Why this answer is correct
The correct answer is B. ( (1,a) ). In \(B\times A\), the first coordinate comes from (B) and the second from (A). Hence ((1,a)) is correct.
Exam Tip
\(B\times A\) में पहला निर्देशांक (B) से और दूसरा (A) से आता है। इसलिए ((1,a)) सही है।
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