Question 1153264
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Straightforward application of two basic principles: (1) "n choose r" and (2) fundamental counting principle.<br>
Choose 2 of the 6 eligible freshmen: "6 choose 2" = C(6,2) = 15
Choose 3 of the 7 eligible sophomores: 7 choose 3 = 35
Choose 4 of the 8 eligible juniors: 8 choose 4 = 70
Choose 5 of the 9 eligible seniors: 9 choose 5 = 126<br>
All together: 15*35*70*126 = 4,630,500 ways<br>