A total of 5 seniors, 4 juniors and 3 sophomores have been nominated to serve on a
Chapter 8, Problem 37(choose chapter or problem)
A total of 5 seniors, 4 juniors and 3 sophomores have been nominated to serve on a 4-person committee. How many different committees are possible if (a) the committee must consist of students from exactly two of the three classes? (b) at least one student from each class must serve on the committee?
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