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In a survey of 100 students, 60 like Maths, 50 like Science, 30 like both. How many like neither?
A10
B30
C40
D20
Answer & Solution
Correct answer: D. 20
1. By inclusion-exclusion: like Maths or Science = 60 + 50 − 30 = 80.
2. Like neither = 100 − 80.
3. Answer: 20.
_Source: TSICET 2024 PYQ Q.69 (Shift 1, Sets)_
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