यदि \(U=\mathbb{R}\), \(A=[-2,\infty\)) और (B=\(-\infty,5]\), तो (\(A'\cup B'\)') क्या है?
If \(U=\mathbb{R}\), \(A=[-2,\infty\)), and (B=\(-\infty,5]\), what is (\(A'\cup B'\)')?
Explanation opens after your attempt
Correct Answer
A. ([-2,5])
Concept
By De Morgan's law, (\(A'\cup B'\)'=A\cap B). Here \(A\cap B=[-2,5]\).
Why this answer is correct
The correct answer is A. ([-2,5]). By De Morgan's law, (\(A'\cup B'\)'=A\cap B). Here \(A\cap B=[-2,5]\).
Exam Tip
डी मॉर्गन से (\(A'\cup B'\)'=A\cap B) है। \(A\cap B=[-2,5]\) मिलता है।
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