alleryIn a survey, 40% liked tea only, 30% coffee only, 20% both. % who liked neither:
A10%
B20%
C30%
D5%
Answer & Solution
Correct answer: A. 10%
1. Tea only + coffee only + both = 40 + 30 + 20 = 90%.
2. Neither = 100 − 90.
3. = 10%.
_Source: jkchrome DI QB, p.3 — set complement_
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