यदि (n(U)=100), (n(A)=45), (n(B)=40), और (n\(A\cap B\)=15), तो (n(\(A\cup B\)')) क्या है?

If (n(U)=100), (n(A)=45), (n(B)=40), and (n\(A\cap B\)=15), what is (n(\(A\cup B\)'))?

Explanation opens after your attempt
Correct Answer

A. (30)

Step 1

Concept

First, (n\(A\cup B\)=45+40-15=70). Therefore, (n(\(A\cup B\)')=100-70=30).

Step 2

Why this answer is correct

The correct answer is A. (30). First, (n\(A\cup B\)=45+40-15=70). Therefore, (n(\(A\cup B\)')=100-70=30).

Step 3

Exam Tip

पहले (n\(A\cup B\)=45+40-15=70)। इसलिए (n(\(A\cup B\)')=100-70=30)।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(U)=100), (n(A)=45), (n(B)=40), और (n\(A\cap B\)=15), तो (n(\(A\cup B\)')) क्या है? / If (n(U)=100), (n(A)=45), (n(B)=40), and (n\(A\cap B\)=15), what is (n(\(A\cup B\)'))?

Correct Answer: A. (30). Explanation: पहले (n\(A\cup B\)=45+40-15=70)। इसलिए (n(\(A\cup B\)')=100-70=30)। / First, (n\(A\cup B\)=45+40-15=70). Therefore, (n(\(A\cup B\)')=100-70=30).

Which concept should I revise for this Mathematics MCQ?

First, (n\(A\cup B\)=45+40-15=70). Therefore, (n(\(A\cup B\)')=100-70=30).

What exam hint can help solve this Mathematics question?

पहले (n\(A\cup B\)=45+40-15=70)। इसलिए (n(\(A\cup B\)')=100-70=30)।