यदि (n(B)=42) और (n\(B\setminus A\)=25) है, तो (n\(A\cap B\)) क्या है?
If (n(B)=42) and (n\(B\setminus A\)=25), what is (n\(A\cap B\))?
Explanation opens after your attempt
Correct Answer
A. (17)
Concept
The two parts of (B) are \(B\setminus A\) and \(A\cap B\). Hence (n\(A\cap B\)=42-25=17).
Why this answer is correct
The correct answer is A. (17). The two parts of (B) are \(B\setminus A\) and \(A\cap B\). Hence (n\(A\cap B\)=42-25=17).
Exam Tip
(B) के दो भाग \(B\setminus A\) और \(A\cap B\) हैं। इसलिए (n\(A\cap B\)=42-25=17)।
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