1.The English department of a college has 8 male professors, 9 female professors, 14 male TA's and 9 female TA's. If one is selected randomly, what's the probability you selected a professor or a male?
31/40
33/40
39/40
none
2. In a group of 7 professors, what is the probability that at least 2 professors have the same birth month, under the assumption that all months are equally likely.
73%
89%
95%
none
3. The odds against contracting an airborne disease while in flight is 999 to 1. What is the probability of contracting an airborne disease?
1/998
1/999
1/1000
none