\(यदि (U=\mathbb{R}) और (A={x:x \in \mathbb{R},x\le -1\) या \(x>3}), तो (A') क्या है\)?
\(If (U=\mathbb{R}) and (A={x:x \in \mathbb{R},x\le -1\) or \(x>3}), what is (A')\)?
Explanation opens after your attempt
Correct Answer
A. ((-1,3])
Concept
(A) includes (-1), so it is not in the complement. The point (3) is not in (A), so it is included in the complement.
Why this answer is correct
The correct answer is A. ((-1,3]). (A) includes (-1), so it is not in the complement. The point (3) is not in (A), so it is included in the complement.
Exam Tip
(A) में (-1) शामिल है, इसलिए पूरक में नहीं आएगा। (3) (A) में नहीं है, इसलिए पूरक में शामिल होगा।
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