In a group of 15, 7 have studied Latin, 8 have studied Greek, and 3 have not studied either. How many of these studied both Latin and Greek?
Solution
Correct Answer: Option B
In the group of 12 who have studied at least one, 7 have studied Latin and 8 have studied Greek. 7+8=15, which is 3 larger than 12. Therefore, 3 students studied both.
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