यदि \(A\subseteq B\subseteq U\) और (n(U)=90), (n(B)=54), (n(A)=31), तो (n\(A'\cap B\)) क्या है?
If \(A\subseteq B\subseteq U\), (n(U)=90), (n(B)=54), and (n(A)=31), what is (n\(A'\cap B\))?
Explanation opens after your attempt
Correct Answer
A. (23)
Concept
\(A'\cap B\) means (B-A) because \(A\subseteq B\). Therefore (n\(A'\cap B\)=54-31=23).
Why this answer is correct
The correct answer is A. (23). \(A'\cap B\) means (B-A) because \(A\subseteq B\). Therefore (n\(A'\cap B\)=54-31=23).
Exam Tip
\(A'\cap B\) का अर्थ (B-A) है क्योंकि \(A\subseteq B\)। इसलिए (n\(A'\cap B\)=54-31=23) है।
Login to save your score, XP, coins and progress.