यदि \(U=\{p,q,r,s,t,u,v\}\), (A'={q,s,u}) और \(B=\{p,q,t,v\}\), तो \(A\cap B\) क्या है?
If \(U=\{p,q,r,s,t,u,v\}\), (A'={q,s,u}), and \(B=\{p,q,t,v\}\), what is \(A\cap B\)?
Explanation opens after your attempt
A. ({p,t,v})
Concept
First write (A=U-A'={p,r,t,v}). Intersecting with (B) gives ({p,t,v}).
Why this answer is correct
The correct answer is A. ({p,t,v}). First write (A=U-A'={p,r,t,v}). Intersecting with (B) gives ({p,t,v}).
Exam Tip
पहले (A=U-A'={p,r,t,v}) लिखें। फिर (B) से प्रतिच्छेद लेने पर ({p,t,v}) मिलता है।
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