- A18
- B28
- C47
- D31
Step-by-Step Solution
Not tea = coffee only + neither . 18 forgets the 10 who drink neither, 47 adds tea-only to coffee-only, and 31 is the whole Coffee circle, which includes 13 tea drinkers.
Answer: B) 28
Staff of a Kochi office were asked whether they drink tea, coffee, both or neither. How many staff do NOT drink tea?
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