यदि \(A=\{1,2,3\}\) और \(B=\{3,2,1\}\) हैं, तो \(A\cap B\) क्या है?
If \(A=\{1,2,3\}\) and \(B=\{3,2,1\}\), what is \(A\cap B\)?
Explanation opens after your attempt
Correct Answer
A. ( {1,2,3} )
Concept
Both sets are equal, so all elements are common. Hence \(A\cap B={1,2,3}\).
Why this answer is correct
The correct answer is A. ( {1,2,3} ). Both sets are equal, so all elements are common. Hence \(A\cap B={1,2,3}\).
Exam Tip
दोनों समुच्चय समान हैं, इसलिए सभी अवयव सामान्य हैं। अतः \(A\cap B={1,2,3}\) है।
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