यदि \(A=\{p,q,r,s\}\), \(B=\{r,s,t\}\) और \(C=\{s,t,u\}\) हैं, तो (A\cap \(B\cup C\)) क्या है?
If \(A=\{p,q,r,s\}\), \(B=\{r,s,t\}\), and \(C=\{s,t,u\}\), what is (A\cap \(B\cup C\))?
Explanation opens after your attempt
Correct Answer
A. ( {r,s} )
Concept
First take \(B\cup C={r,s,t,u}\), then common elements with (A) are (r,s). Solve the bracket first.
Why this answer is correct
The correct answer is A. ( {r,s} ). First take \(B\cup C={r,s,t,u}\), then common elements with (A) are (r,s). Solve the bracket first.
Exam Tip
पहले \(B\cup C={r,s,t,u}\) लें, फिर (A) से सामान्य अवयव (r,s) मिलते हैं। कोष्ठक पहले हल करें।
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