\(यदि (U=\mathbb{R}), (A={x:x\le 1\) या \(x>9}), तो (A') क्या है\)?
\(If (U=\mathbb{R}), (A={x:x\le 1\) or \(x>9}), what is (A')\)?
Explanation opens after your attempt
A. ((1,9])
Concept
To be outside (A), (x>1) and \(x\le 9\) must hold. Therefore (A'=(1,9]).
Why this answer is correct
The correct answer is A. ((1,9]). To be outside (A), (x>1) and \(x\le 9\) must hold. Therefore (A'=(1,9]).
Exam Tip
(A) के बाहर होने के लिए (x>1) और \(x\le 9\) होना चाहिए। अतः (A'=(1,9]) है।
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