यदि \(A={x:x\in\mathbb{Z},\ |x|\le3}\) और \(B={x:x\in\mathbb{Z},\ x^2-1=0}\), तो \(A\setminus B\) क्या है?
If \(A={x:x\in\mathbb{Z},\ |x|\le3}\) and \(B={x:x\in\mathbb{Z},\ x^2-1=0}\), what is \(A\setminus B\)?
Explanation opens after your attempt
Correct Answer
A. ({-3,-2,0,2,3})
Concept
\(A=\{-3,-2,-1,0,1,2,3\}\) and \(B=\{-1,1\}\), so removing them leaves ({-3,-2,0,2,3}). List both sets first.
Why this answer is correct
The correct answer is A. ({-3,-2,0,2,3}). \(A=\{-3,-2,-1,0,1,2,3\}\) and \(B=\{-1,1\}\), so removing them leaves ({-3,-2,0,2,3}). List both sets first.
Exam Tip
\(A=\{-3,-2,-1,0,1,2,3\}\) और \(B=\{-1,1\}\), इसलिए इन्हें हटाने पर ({-3,-2,0,2,3}) बचता है। पहले दोनों समुच्चय सूचीबद्ध करें।
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