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1. In a group of 15 high school students, 7 study Latin, 8 study French and 3 study nither Latin nor French. How many students study both Latin and French?
- A. 3
- B. 3
- C. 3
- D. 3
Answer: Option A
Explanation:
The number of students studying Latin or French n(LUF) = 15 - 3 = 12
Now, n(LUF) = n(L) + n(F) - n(LꓵF)
or, n(LꓵF) = n(L) + n(F) - n(LUF) = 7 + 8 - 12 = 3
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