(n(A-B)=32) और (n\(A\cap B\)=18) है। (n(A)) कितना होगा?
(n(A-B)=32) and (n\(A\cap B\)=18). What is (n(A))?
Explanation opens after your attempt
B. (50)
Concept
Whole (A) is made of (A-B) and \(A\cap B\). Hence (n(A)=32+18=50).
Why this answer is correct
The correct answer is B. (50). Whole (A) is made of (A-B) and \(A\cap B\). Hence (n(A)=32+18=50).
Exam Tip
पूरा (A), (A-B) और \(A\cap B\) से बनता है। इसलिए (n(A)=32+18=50)।
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