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
Correct Answer

D. (33)

Step 1

Concept

For disjoint sets, the common part is (0). Therefore, (n\(A\cup B\)=15+18=33).

Step 2

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).

Step 3

Exam Tip

असंबद्ध समुच्चयों में साझा भाग (0) होता है। इसलिए (n\(A\cup B\)=15+18=33)।

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Mathematics Answer, Explanation and Revision Hints

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\(A\cup B\))?

Correct Answer: D. (33). Explanation: असंबद्ध समुच्चयों में साझा भाग (0) होता है। इसलिए (n\(A\cup B\)=15+18=33)। / For disjoint sets, the common part is (0). Therefore, (n\(A\cup B\)=15+18=33).

Which concept should I revise for this Mathematics MCQ?

For disjoint sets, the common part is (0). Therefore, (n\(A\cup B\)=15+18=33).

What exam hint can help solve this Mathematics question?

असंबद्ध समुच्चयों में साझा भाग (0) होता है। इसलिए (n\(A\cup B\)=15+18=33)।