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