यदि (|U|=180), (|A|=85), (|B'|=110) और \(|A\cap B|=28\), तो (|\(A\cup B\)'|) कितना है?
If (|U|=180), (|A|=85), (|B'|=110), and \(|A\cap B|=28\), what is (|\(A\cup B\)'|)?
Explanation opens after your attempt
C. (53)
Concept
(|B|=180-110=70) and \(|A\cup B|=85+70-28=127\). Hence (|\(A\cup B\)'|=180-127=53).
Why this answer is correct
The correct answer is C. (53). (|B|=180-110=70) and \(|A\cup B|=85+70-28=127\). Hence (|\(A\cup B\)'|=180-127=53).
Exam Tip
(|B|=180-110=70) और \(|A\cup B|=85+70-28=127\)। इसलिए (|\(A\cup B\)'|=180-127=53)।
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