यदि \(A=\{1,2,3\}\) है, तो \(A\cup \emptyset\) क्या है?
If \(A=\{1,2,3\}\), what is \(A\cup \emptyset\)?
Explanation opens after your attempt
Correct Answer
B. ( {1,2,3} )
Concept
The empty set has no element, so union with it does not change (A). Remember the identity law \(A\cup \emptyset=A\).
Why this answer is correct
The correct answer is B. ( {1,2,3} ). The empty set has no element, so union with it does not change (A). Remember the identity law \(A\cup \emptyset=A\).
Exam Tip
रिक्त समुच्चय में कोई अवयव नहीं होता, इसलिए संघ लेने पर (A) नहीं बदलता। पहचान नियम \(A\cup \emptyset=A\) याद रखें।
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