A class has 175
students. The following table shows the number of students studying one or more of the following subjects in this class :
|Subject||Number of students|
|Mathematics and Physics||30|
|Mathematics and Chemistry||28|
|Physics and Chemistry||23|
|Mathematics, Physics and Chemistry||18|
How many students are enrolled in Mathematics alone, Physics alone and Chemistry alone ? Are there students who have not offered any of these three subjects ?