यदि \(U=\mathbb{R}\), (A=\(-\infty,2]\) और \(B=[-1,\infty\)), तो \(A'\cap B'\) क्या है?
If \(U=\mathbb{R}\), (A=\(-\infty,2]\), and \(B=[-1,\infty\)), what is \(A'\cap B'\)?
Explanation opens after your attempt
Correct Answer
A. \(\varnothing\)
Concept
(A'=\(2,\infty\)) and (B'=\(-\infty,-1\)). They have no common real element.
Why this answer is correct
The correct answer is A. \(\varnothing\). (A'=\(2,\infty\)) and (B'=\(-\infty,-1\)). They have no common real element.
Exam Tip
(A'=\(2,\infty\)) और (B'=\(-\infty,-1\)) हैं। इनका कोई समान वास्तविक सदस्य नहीं है।
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