Probability

In a class of 40 social sciences students, 10 are not showing any covid-19 signs and every student of the remaining 30 has high fever, chest pain or both. If 15 have high fever and 25 have chest pain. If a student is selected randomly from this group, what is the likelihood that he/she has;

1. High fever                                                                                               (2marks)
2. Has chest pain                                                                                         (2marks)
3. Has high fever and chest pain                                                                 (2marks)
4. Has either high fever or chest pain