एक सर्वे में (150) लोगों में से (88) चाय सेट (T) में, (76) कॉफी सेट (C) में और (39) दोनों में हैं। केवल चाय पीने वाले कितने हैं?

In a survey of (150) people, (88) are in tea set (T), (76) are in coffee set (C), and (39) are in both. How many drink only tea?

Explanation opens after your attempt
Correct Answer

A. (49)

Step 1

Concept

Only tea means \(|T\setminus C|=|T|-|T\cap C|=88-39=49\). In only-type questions, subtract the intersection.

Step 2

Why this answer is correct

The correct answer is A. (49). Only tea means \(|T\setminus C|=|T|-|T\cap C|=88-39=49\). In only-type questions, subtract the intersection.

Step 3

Exam Tip

केवल चाय का अर्थ \(|T\setminus C|=|T|-|T\cap C|=88-39=49\) है। केवल वाले प्रश्नों में प्रतिच्छेद घटाएँ।

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एक सर्वे में (150) लोगों में से (88) चाय सेट (T) में, (76) कॉफी सेट (C) में और (39) दोनों में हैं। केवल चाय पीने वाले कितने हैं? / In a survey of (150) people, (88) are in tea set (T), (76) are in coffee set (C), and (39) are in both. How many drink only tea?

Correct Answer: A. (49). Explanation: केवल चाय का अर्थ \(|T\setminus C|=|T|-|T\cap C|=88-39=49\) है। केवल वाले प्रश्नों में प्रतिच्छेद घटाएँ। / Only tea means \(|T\setminus C|=|T|-|T\cap C|=88-39=49\). In only-type questions, subtract the intersection.

Which concept should I revise for this Mathematics MCQ?

Only tea means \(|T\setminus C|=|T|-|T\cap C|=88-39=49\). In only-type questions, subtract the intersection.

What exam hint can help solve this Mathematics question?

केवल चाय का अर्थ \(|T\setminus C|=|T|-|T\cap C|=88-39=49\) है। केवल वाले प्रश्नों में प्रतिच्छेद घटाएँ।