यदि \(A=\{m,n\}\) और \(B=\{7,8,9\}\) हैं, तो \(A\times B\) में दूसरे घटकों का समुच्चय क्या है?
If \(A=\{m,n\}\) and \(B=\{7,8,9\}\), what is the set of second components in \(A\times B\)?
Explanation opens after your attempt
Correct Answer
A. ({7,8,9})
Concept
Second components always come from (B). Since (A) is non-empty, every element of (B) appears as a second component.
Why this answer is correct
The correct answer is A. ({7,8,9}). Second components always come from (B). Since (A) is non-empty, every element of (B) appears as a second component.
Exam Tip
दूसरे घटक हमेशा (B) से आते हैं। क्योंकि (A) अरिक्त है, (B) का हर अवयव दूसरे घटक में आएगा।
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