यदि \(A={x\in\mathbb{Z}:x^2-1=0}\) और \(B={x\in\mathbb{Z}:x^2=1}\), तो (A-B) क्या है?
If \(A={x\in\mathbb{Z}:x^2-1=0}\) and \(B={x\in\mathbb{Z}:x^2=1}\), what is (A-B)?
Explanation opens after your attempt
Correct Answer
A. \(\varnothing\)
Concept
Both conditions give the same set ({-1,1}). The difference of equal sets is the empty set.
Why this answer is correct
The correct answer is A. \(\varnothing\). Both conditions give the same set ({-1,1}). The difference of equal sets is the empty set.
Exam Tip
दोनों शर्तों से वही समुच्चय ({-1,1}) मिलता है। समान समुच्चयों का अंतर खाली समुच्चय होता है।
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