एक सर्वे में (n(U)=40) और (n\(A^c\)=15) है। (n(A)) कितना होगा?
In a survey, (n(U)=40) and (n\(A^c\)=15). What is (n(A))?
Explanation opens after your attempt
A. (25)
Concept
(n(A)=n(U)-n\(A^c\)). Therefore (40-15=25).
Why this answer is correct
The correct answer is A. (25). (n(A)=n(U)-n\(A^c\)). Therefore (40-15=25).
Exam Tip
(n(A)=n(U)-n\(A^c\)) होता है। इसलिए (40-15=25) मिलेगा।
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