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In a survey of 100 people, 60 like tea, 50 like coffee, 30 like both. How many like only tea?
A30
B20
C40
D50
Answer & Solution
Correct answer: A. 30
1. Only tea = Tea - Both = 60 - 30.
2. = 30.
3. Hence 30.
_Source: UGC NET Paper 1 Study Book (ugc-net.com class notes) — Set Diagrams_