Question

There are a total of 103 foreign language students in a high school where they offer Spanish, French, and German. There are 19 students who take at least 2 languages at once. If there are 38 Spanish students, 38 French students, and 46 German students, how many students take all three languages at once

Answer 1

I answered this problem for someone else earlier today.

You can probably find it in the list of links below.