SOLUTION: The sample space contains 8As and 7Bs. What is the probability that a randomly selected set of 3 will include 2As and 1B​?

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Question 1054054: The sample space contains 8As and 7Bs. What is the probability that a randomly selected set of 3 will include 2As and 1B​?
Answer by Fombitz(32388) About Me  (Show Source):
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There are eight possible outcomes with A's and B's.
Three of the possible outcomes have 2 A's and 1 B.
AAB
ABA
BAA
.
.
.
P=3%288%2F15%29%287%2F14%29%287%2F13%29
P=28%2F65