एक सर्वे में (n(U)=200), (n(A)=96), (n(B)=88), (n(C)=74), (n\(A\cap B\)=40), (n\(B\cap C\)=31), (n\(C\cap A\)=29) और (n\(A\cap B\cap C\)=12) हैं। किसी भी समुच्चय में नहीं आने वाले कितने हैं?
In a survey (n(U)=200), (n(A)=96), (n(B)=88), (n(C)=74), (n\(A\cap B\)=40), (n\(B\cap C\)=31), (n\(C\cap A\)=29), and (n\(A\cap B\cap C\)=12). How many are in none of the sets?
Explanation opens after your attempt
C. (30)
Concept
The union is (96+88+74-40-31-29+12=170), so none is (200-170=30). First find the three-set union.
Why this answer is correct
The correct answer is C. (30). The union is (96+88+74-40-31-29+12=170), so none is (200-170=30). First find the three-set union.
Exam Tip
संघ (96+88+74-40-31-29+12=170) है, इसलिए कोई नहीं (200-170=30)। पहले तीन-समुच्चय संघ निकालें।
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