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