तीन समुच्चयों के लिए (n(A)=64), (n(B)=58), (n(C)=52), (n\(A\cap B\)=24), (n\(B\cap C\)=21), (n\(C\cap A\)=19) और (n\(A\cap B\cap C\)=8) है। (n\(A\cup B\cup C\)) कितना है?
For three sets (n(A)=64), (n(B)=58), (n(C)=52), (n\(A\cap B\)=24), (n\(B\cap C\)=21), (n\(C\cap A\)=19), and (n\(A\cap B\cap C\)=8). What is (n\(A\cup B\cup C\))?
Explanation opens after your attempt
B. (118)
Concept
The union of three sets is (64+58+52-24-21-19+8=118). After subtracting pairwise intersections, add the central part back.
Why this answer is correct
The correct answer is B. (118). The union of three sets is (64+58+52-24-21-19+8=118). After subtracting pairwise intersections, add the central part back.
Exam Tip
तीन समुच्चयों का संघ (64+58+52-24-21-19+8=118) है। जोड़ी प्रतिच्छेद घटाने के बाद केंद्रीय भाग वापस जोड़ें।
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