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Marius
Marius
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The 22 students of the course of History of Italian Opera must write a short paper about at least two composers, they have a better grade, if they choose to write a paper about one more composer. among the students 17 choose Verdi, 15 choose Rossini, 15 Donizetti. how many students have chosen to write three papers? a

a) 2 students 
b) it is impossible to answer this question 
c) 3 students 
d) nobody has chosen three composers 
e) 15 students

The 22 students of the course of History of Italian Opera must write a short paper about at least two composers, they have a better grade, if they choose to write a paper about one more composer. among the students 17 choose Verdi, 15 choose Rossini, 15 Donizetti. how many students have chosen to write three papers? a) 2 students b) it is impossible to answer this question c) 3 students d) nobody has chosen three composers e) 15 students

The 22 students of the course of History of Italian Opera must write a short paper about at least two composers, they have a better grade, if they choose to write a paper about one more composer. among the students 17 choose Verdi, 15 choose Rossini, 15 Donizetti. how many students have chosen to write three papers?

a) 2 students 
b) it is impossible to answer this question 
c) 3 students 
d) nobody has chosen three composers 
e) 15 students

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user26302
user26302
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How can we solve this question?

The 22 students of the course of History of Italian Opera must write a short paper about at least two composers, they have a better grade, if they choose to write a paper about one more composer. among the students 17 choose Verdi, 15 choose Rossini, 15 Donizetti. how many students have chosen to write three papers? a) 2 students b) it is impossible to answer this question c) 3 students d) nobody has chosen three composers e) 15 students