यदि \(A=\{1,2,3,4\}\), तो \(A\cup\varnothing\), \(A\cap\varnothing\), और \(A-\varnothing\) क्रमशः क्या हैं?
If \(A=\{1,2,3,4\}\), what are \(A\cup\varnothing\), \(A\cap\varnothing\), and \(A-\varnothing\) respectively?
Explanation opens after your attempt
Correct Answer
A. \(A,\varnothing,A\)
Concept
The empty set adds nothing in union, gives nothing in intersection, and removes nothing in difference. Hence the answer is \(A,\varnothing,A\).
Why this answer is correct
The correct answer is A. \(A,\varnothing,A\). The empty set adds nothing in union, gives nothing in intersection, and removes nothing in difference. Hence the answer is \(A,\varnothing,A\).
Exam Tip
खाली समुच्चय संघ में कुछ नहीं जोड़ता, प्रतिच्छेद में कुछ सामान्य नहीं देता और अंतर में कुछ नहीं हटाता। इसलिए उत्तर \(A,\varnothing,A\) है।
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