01:58
Probability with Applications in Engineering, Science, and Technology
Ann and Bev have each applied for several jobs at a local university. Let $A$ be the event that Ann is hired and let $B$ be the event that Bev is hired. Express in terms of $A$ and $B$ the events
(a) Ann is hired but not Bev.
(b) At least one of them is hired.
(c) Exactly one of them is hired.