यदि \(U=\{1,2,3,4,5,6,7,8\}\) और \(A^{c}={1,4,7}\), तो (n(A)) क्या है?
If \(U=\{1,2,3,4,5,6,7,8\}\) and \(A^{c}={1,4,7}\), what is (n(A))?
Explanation opens after your attempt
Correct Answer
B. (5)
Concept
(n(A)=n(U)-n\(A^{c}\)=8-3=5). If the complement is given, subtract it from the total.
Why this answer is correct
The correct answer is B. (5). (n(A)=n(U)-n\(A^{c}\)=8-3=5). If the complement is given, subtract it from the total.
Exam Tip
(n(A)=n(U)-n\(A^{c}\)=8-3=5)। यदि पूरक दिया हो तो कुल में से पूरक घटाएं।
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