At a local community college, 40% of students who enter the college as freshmen go on to

Question:

At a local community college, 40% of students who enter the college as freshmen go on to graduate. Ten freshmen are randomly selected.
a. What is the probability that none of them graduates from the local college?
b. What is the probability that at most nine will graduate from the local college?
c. What is the expected number that will graduate?