- A15
- B31
- C47
- D10
Step-by-Step Solution
The four exactly-three regions hold . Adding the 5 in the centre (all four) gives 15; 31 is the exactly-two total and 47 the exactly-one total.
Answer: D) 10
Residents of a Pune housing society marked the activities they do every week. How many residents do exactly three of the four activities?
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