(n(U)=100), (n(A)=48), (n(B)=46) और (n(\(A\cup B\)^c)=18) है। (n\(A\cap B\)) कितना होगा?
(n(U)=100), (n(A)=48), (n(B)=46), and (n(\(A\cup B\)^c)=18). What is (n\(A\cap B\))?
Explanation opens after your attempt
B. (12)
Concept
First (n\(A\cup B\)=100-18=82). Then (n\(A\cap B\)=48+46-82=12).
Why this answer is correct
The correct answer is B. (12). First (n\(A\cup B\)=100-18=82). Then (n\(A\cap B\)=48+46-82=12).
Exam Tip
पहले (n\(A\cup B\)=100-18=82)। फिर (n\(A\cap B\)=48+46-82=12)।
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