यदि (|U|=90), \(|A\cap B|=24\), \(|A'\cap B|=17\) और \(|A'\cap B'|=29\), तो \(|A\cap B'|\) कितना है?
If (|U|=90), \(|A\cap B|=24\), \(|A'\cap B|=17\), and \(|A'\cap B'|=29\), what is \(|A\cap B'|\)?
Explanation opens after your attempt
Correct Answer
B. (20)
Concept
The four disjoint regions add up to (|U|). Therefore \(|A\cap B'|=90-24-17-29=20\).
Why this answer is correct
The correct answer is B. (20). The four disjoint regions add up to (|U|). Therefore \(|A\cap B'|=90-24-17-29=20\).
Exam Tip
चार असंयुक्त भागों का योग (|U|) होता है। इसलिए \(|A\cap B'|=90-24-17-29=20\)।
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