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
Correct Answer

C. (30)

Step 1

Concept

The union is (96+88+74-40-31-29+12=170), so none is (200-170=30). First find the three-set union.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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?

Correct Answer: C. (30). Explanation: संघ (96+88+74-40-31-29+12=170) है, इसलिए कोई नहीं (200-170=30)। पहले तीन-समुच्चय संघ निकालें। / The union is (96+88+74-40-31-29+12=170), so none is (200-170=30). First find the three-set union.

Which concept should I revise for this Mathematics MCQ?

The union is (96+88+74-40-31-29+12=170), so none is (200-170=30). First find the three-set union.

What exam hint can help solve this Mathematics question?

संघ (96+88+74-40-31-29+12=170) है, इसलिए कोई नहीं (200-170=30)। पहले तीन-समुच्चय संघ निकालें।