यदि \(A\cap B=\varnothing\), (n(A)=15), और (n(B)=18), तो (n\(A\cup B\)) क्या है?
If \(A\cap B=\varnothing\), (n(A)=15), and (n(B)=18), what is (n\(A\cup B\))?
Explanation opens after your attempt
D. (33)
Concept
For disjoint sets, the common part is (0). Therefore, (n\(A\cup B\)=15+18=33).
Why this answer is correct
The correct answer is D. (33). For disjoint sets, the common part is (0). Therefore, (n\(A\cup B\)=15+18=33).
Exam Tip
असंबद्ध समुच्चयों में साझा भाग (0) होता है। इसलिए (n\(A\cup B\)=15+18=33)।
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