यदि \(A=\{p,q,r\}\) और \(B=\{q,r,s,t\}\), तो केवल (B) वाला भाग क्या है?
If \(A=\{p,q,r\}\) and \(B=\{q,r,s,t\}\), what is the only (B) part?
Explanation opens after your attempt
C. ({s,t})
Concept
For only (B), find (B-A). Since (q) and (r) are common, ({s,t}) remains.
Why this answer is correct
The correct answer is C. ({s,t}). For only (B), find (B-A). Since (q) and (r) are common, ({s,t}) remains.
Exam Tip
केवल (B) के लिए (B-A) निकालते हैं। (q) और (r) साझा हैं, इसलिए ({s,t}) बचता है।
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