# Need math help with a mathematics class that is composed of 11 freshmen, 7 sophomores, and 4 juniors.

**Question description**

A mathematics class is composed of 11 freshmen, 7 sophomores, and 4 juniors. Three of the freshmen, two of the sophomores, and one junior receive A grades in the course. If a student is selected at random from the class, find the probability that the student is each of the following. (Enter your probabilities as fractions.)

(a) an A student

(b) an A freshman student

(c) a sophomore

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