Question

In a group of 45 people, 15 are healthy and every person of the remaining 30 has either high blood pressure, a high level of cholesterol or both. If 17 have high blood pressure and 28 have high level of cholesterol: how many people have high blood pressure and a high level of cholesterol? If a person is selected randomly from this group, what is the probability that he/she

a.Has high blood pressure (event a)?

b.Has high level of cholesterol (event b)?

c.Has high blood pressure and high level of cholesterol (event a and b)?

d.Has either high blood pressure or high level of cholesterol (event a or b)?

Answer 1

Answer c has high blood pressure And high levels of cholesterol