यदि (n(A)=12), (n(B)=14), (n(C)=10), (n\(A\cap B\)=5), (n\(A\cap C\)=3), (n\(B\cap C\)=4), और (n\(A\cap B\cap C\)=2), तो (n\(A\cup B\cup C\)) क्या है?
If (n(A)=12), (n(B)=14), (n(C)=10), (n\(A\cap B\)=5), (n\(A\cap C\)=3), (n\(B\cap C\)=4), and (n\(A\cap B\cap C\)=2), what is (n\(A\cup B\cup C\))?
Explanation opens after your attempt
B. (26)
Concept
By the three-set formula, (12+14+10-5-3-4+2=26). Subtract pairwise intersections and add the common part of all three.
Why this answer is correct
The correct answer is B. (26). By the three-set formula, (12+14+10-5-3-4+2=26). Subtract pairwise intersections and add the common part of all three.
Exam Tip
तीन समुच्चयों के सूत्र से (12+14+10-5-3-4+2=26)। जोड़ी प्रतिच्छेद घटाकर तीनों का साझा भाग जोड़ें।
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