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) 5/2
C) 5/1
D) 5/6
E) 5/5
P(at least one graduate) = 1 - P(no graduates)   = 1 - 6C3/10C3 = 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?