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