यदि (n(U)=30), (n(A)=11), तो (n(A')) क्या होगा?
If (n(U)=30) and (n(A)=11), what will (n(A')) be?
Explanation opens after your attempt
Correct Answer
B. (19)
Concept
(n(A')=n(U)-n(A)=30-11=19). In a Venn diagram, (A') means the part outside (A).
Why this answer is correct
The correct answer is B. (19). (n(A')=n(U)-n(A)=30-11=19). In a Venn diagram, (A') means the part outside (A).
Exam Tip
(n(A')=n(U)-n(A)=30-11=19)। वेन आरेख में (A') का अर्थ (A) के बाहर का भाग है।
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