if a class has 2 freshmen, 1 shphomore, 3 juniors, and 5 seniors, what is the probability that three students randomly selected for a group are all seniors?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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if a class has 2 freshmen, 1 shphomore, 3 juniors, and 5 seniors, what is the probability that three students randomly selected for a group are all seniors?

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