यदि (|A|=30), (|B|=27), (|C|=25), \(|A\cap B|=12\), \(|B\cap C|=10\), \(|C\cap A|=8\), \(|A\cap B\cap C|=4\), तो \(|A\cup B\cup C|\) क्या है?
If (|A|=30), (|B|=27), (|C|=25), \(|A\cap B|=12\), \(|B\cap C|=10\), \(|C\cap A|=8\), \(|A\cap B\cap C|=4\), what is \(|A\cup B\cup C|\)?
Explanation opens after your attempt
A. (56)
Concept
Here \(|A\cup B\cup C|=30+27+25-12-10-8+4=56\). Do not forget to add the triple intersection in the three-set formula.
Why this answer is correct
The correct answer is A. (56). Here \(|A\cup B\cup C|=30+27+25-12-10-8+4=56\). Do not forget to add the triple intersection in the three-set formula.
Exam Tip
\(|A\cup B\cup C|=30+27+25-12-10-8+4=56\)। तीन सेटों के सूत्र में अंतिम प्रतिच्छेद जोड़ना न भूलें।
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