तीन समुच्चयों में केवल (A=19), केवल (B=23), केवल (C=17), केवल \(A\cap B=8\), केवल \(B\cap C=10\), केवल \(C\cap A=6\) और \(A\cap B\cap C=5\) हैं। (n\(B\cup C\)) कितना होगा?

In three sets, only (A=19), only (B=23), only (C=17), only \(A\cap B=8\), only \(B\cap C=10\), only \(C\cap A=6\), and \(A\cap B\cap C=5\). What is (n\(B\cup C\))?

Explanation opens after your attempt
Correct Answer

B. (61)

Step 1

Concept

\(B\cup C\) includes parts inside (B) or (C), (23+17+8+10+6+5=69). Notice that only (A) is not included.

Step 2

Why this answer is correct

The correct answer is B. (61). \(B\cup C\) includes parts inside (B) or (C), (23+17+8+10+6+5=69). Notice that only (A) is not included.

Step 3

Exam Tip

\(B\cup C\) में (B) या (C) के अंदर आने वाले भाग जुड़ेंगे, (23+17+8+10+6+5=69)। ध्यान दें कि केवल (A) इसमें नहीं आएगा।

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Mathematics Answer, Explanation and Revision Hints

तीन समुच्चयों में केवल (A=19), केवल (B=23), केवल (C=17), केवल \(A\cap B=8\), केवल \(B\cap C=10\), केवल \(C\cap A=6\) और \(A\cap B\cap C=5\) हैं। (n\(B\cup C\)) कितना होगा? / In three sets, only (A=19), only (B=23), only (C=17), only \(A\cap B=8\), only \(B\cap C=10\), only \(C\cap A=6\), and \(A\cap B\cap C=5\). What is (n\(B\cup C\))?

Correct Answer: B. (61). Explanation: \(B\cup C\) में (B) या (C) के अंदर आने वाले भाग जुड़ेंगे, (23+17+8+10+6+5=69)। ध्यान दें कि केवल (A) इसमें नहीं आएगा। / \(B\cup C\) includes parts inside (B) or (C), (23+17+8+10+6+5=69). Notice that only (A) is not included.

Which concept should I revise for this Mathematics MCQ?

\(B\cup C\) includes parts inside (B) or (C), (23+17+8+10+6+5=69). Notice that only (A) is not included.

What exam hint can help solve this Mathematics question?

\(B\cup C\) में (B) या (C) के अंदर आने वाले भाग जुड़ेंगे, (23+17+8+10+6+5=69)। ध्यान दें कि केवल (A) इसमें नहीं आएगा।