Mathematics, 26.06.2020 19:01 sindy35111

3. Of the 80 students in class, 25 are studying German, 15 French and 13 Spanish. 3 are studying German and French; 4 are studying French and Spanish; 2 are studying German and Spanish, and none is studying
all 3 languages at the same time. How many students are not studying any of the three languages?

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