Out of 10 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 from the following answers.
A) 5/8 B) 5/4 C) 5/2 D) 5/6 E) 5/1
P(at least one graduate) = 1 - P(no graduates)   1 = 1 - (6 * 5 * 4)/(10 * 9 * 8) = 5/6.Answer: 5/6
<result>D</result>
Out of 10 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?