Out of 12 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?  Choose the correct choice:  A) A)5/11  B) B)5/11  C) C)5/1  D) D)9/11  E) E)5/3
P(at least one graduate) = 1 - P(no graduates)   = 1 - ⁶C₃/¹⁰C₃   = 1 - (6 * 5 * 4)/(10 * 11 * 12)   = 9/11   Answer:9/11
<result>D</result>
Out of 12 persons working on a project, 4 are graduates. If 3 are selected, what is the probability that there is at least one graduate among them?