# Math Help - Probability

1. ## Probability

A pond has 50 fish in total: 25 catfish, 10 trout, and 15 bass.

a.) What is the probability of catching 3 trout?

b.) What is the probability of catching the 3 types of fish in alphabetical order?

2. Originally Posted by baseball_girl
A pond has 50 fish in total: 25 catfish, 10 trout, and 15 bass.

a.) What is the probability of catching 3 trout?

b.) What is the probability of catching the 3 types of fish in alphabetical order?
a) $\frac{10}{50} \cdot \frac{9}{49} \cdot \frac{8}{48}$

b) $\frac{25}{50} \cdot \frac{15}{49} \cdot \frac{10}{48}$

A tree diagram will make this clearer if you don't see why.