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