यदि (n(U)=72) और (n\(A^c\)=31) है, तो (n(A)) कितना होगा?
If (n(U)=72) and (n\(A^c\)=31), what is (n(A))?
Explanation opens after your attempt
A. (41)
Concept
(n(A)=n(U)-n\(A^c\)). Therefore (72-31=41) is correct.
Why this answer is correct
The correct answer is A. (41). (n(A)=n(U)-n\(A^c\)). Therefore (72-31=41) is correct.
Exam Tip
(n(A)=n(U)-n\(A^c\)) होता है। इसलिए (72-31=41) सही है।
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