If the probability that student A will fail a certain Statistics examination is 0.5, the probability
that student B will fail the examination is 0.2, and the the probability that both student A and
student B will fail the examination is 0.1, what is the probability that
(a) at least one of these two students will fail the examination?
(b) neither student A nor student B will fail the examination?
(c) exactly one of these two students will fail the examination?


www.math.csusb.edu/faculty/hasan/465_SampleQuiz_1.pdf