यदि \(A={x\in\mathbb{R}: -3\le x\le 2}\) और \(B={x\in\mathbb{R}: -1<x<4}\), तो (A-B) क्या है?

If \(A={x\in\mathbb{R}: -3\le x\le 2}\) and \(B={x\in\mathbb{R}: -1<x<4}\), what is (A-B)?

Explanation opens after your attempt
Correct Answer

A. ([-3,-1])

Step 1

Concept

(B) does not include (-1), so (-1) remains. Removing (B) from (A) gives ([-3,-1]).

Step 2

Why this answer is correct

The correct answer is A. ([-3,-1]). (B) does not include (-1), so (-1) remains. Removing (B) from (A) gives ([-3,-1]).

Step 3

Exam Tip

(B) में (-1) शामिल नहीं है, इसलिए (-1) बचता है। (A) से (B) हटाने पर ([-3,-1]) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A={x\in\mathbb{R}: -3\le x\le 2}\) और \(B={x\in\mathbb{R}: -1<x<4}\), तो (A-B) क्या है? / If \(A={x\in\mathbb{R}: -3\le x\le 2}\) and \(B={x\in\mathbb{R}: -1<x<4}\), what is (A-B)?

Correct Answer: A. ([-3,-1]). Explanation: (B) में (-1) शामिल नहीं है, इसलिए (-1) बचता है। (A) से (B) हटाने पर ([-3,-1]) मिलता है। / (B) does not include (-1), so (-1) remains. Removing (B) from (A) gives ([-3,-1]).

Which concept should I revise for this Mathematics MCQ?

(B) does not include (-1), so (-1) remains. Removing (B) from (A) gives ([-3,-1]).

What exam hint can help solve this Mathematics question?

(B) में (-1) शामिल नहीं है, इसलिए (-1) बचता है। (A) से (B) हटाने पर ([-3,-1]) मिलता है।