यदि \(A=\{1,2,3\}\) और \(B=\{3,2,1\}\) हैं, तो \(A\cup B\) क्या है?
If \(A=\{1,2,3\}\) and \(B=\{3,2,1\}\), what is \(A\cup B\)?
Explanation opens after your attempt
Correct Answer
A. ( {1,2,3} )
Concept
Order and repetition do not matter in sets. Therefore (A=B) and \(A\cup B=A\).
Why this answer is correct
The correct answer is A. ( {1,2,3} ). Order and repetition do not matter in sets. Therefore (A=B) and \(A\cup B=A\).
Exam Tip
समुच्चय में क्रम और दोहराव का महत्व नहीं होता। इसलिए (A=B) और \(A\cup B=A\) है।
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