\(यदि (U=\mathbb{R}), (A={x:x\le 1\) 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
Correct Answer

A. ((1,9])

Step 1

Concept

To be outside (A), (x>1) and \(x\le 9\) must hold. Therefore (A'=(1,9]).

Step 2

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]).

Step 3

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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FAQs

Mathematics Answer, Explanation and Revision Hints

\(यदि (U=\mathbb{R}), (A={x:x\le 1\) या x>9}), तो (A') क्या है? \(/ If (U=\mathbb{R}), (A={x:x\le 1\) or \(x>9}), what is (A')\)?

Correct Answer: A. ((1,9]). Explanation: (A) के बाहर होने के लिए (x>1) और \(x\le 9\) होना चाहिए। अतः (A'=(1,9]) है। / To be outside (A), (x>1) and \(x\le 9\) must hold. Therefore (A'=(1,9]).

Which concept should I revise for this Mathematics MCQ?

To be outside (A), (x>1) and \(x\le 9\) must hold. Therefore (A'=(1,9]).

What exam hint can help solve this Mathematics question?

(A) के बाहर होने के लिए (x>1) और \(x\le 9\) होना चाहिए। अतः (A'=(1,9]) है।