यदि \(A\cup B=\varnothing\), तो \(A'\cap B'\) किसके बराबर है?
If \(A\cup B=\varnothing\), what is \(A'\cap B'\) equal to?
Explanation opens after your attempt
Correct Answer
A. (U)
Concept
\(A\cup B=\varnothing\) gives \(A=\varnothing\) and \(B=\varnothing\). Thus (A'=U), (B'=U), and \(A'\cap B'=U\).
Why this answer is correct
The correct answer is A. (U). \(A\cup B=\varnothing\) gives \(A=\varnothing\) and \(B=\varnothing\). Thus (A'=U), (B'=U), and \(A'\cap B'=U\).
Exam Tip
\(A\cup B=\varnothing\) से \(A=\varnothing\) और \(B=\varnothing\) हैं। इसलिए (A'=U), (B'=U), और \(A'\cap B'=U\)।
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