यदि (n(U)=64) और (n(A')=19) है, तो (n(A)) क्या होगा?
If (n(U)=64) and (n(A')=19), what will (n(A)) be?
Explanation opens after your attempt
A. (45)
Concept
(n(A)=n(U)-n(A')=64-19=45). If the complement count is given, subtract it from the total.
Why this answer is correct
The correct answer is A. (45). (n(A)=n(U)-n(A')=64-19=45). If the complement count is given, subtract it from the total.
Exam Tip
(n(A)=n(U)-n(A')=64-19=45)। पूरक की संख्या दी हो तो कुल में से घटाएं।
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