### Home > CC2 > Chapter Ch2 > Lesson 2.1.1 > Problem 2-15

2-15.

Thomas has a bag with

A red marble?

Remember that probability can be written as a fraction:

How many red marbles are there? How many total marbles?

A red or a green marble?

See part (a).

An orange marble?

How many orange marbles are in the bag?