### Home > CCG > Chapter 12 > Lesson 12.1.1 > Problem 12-8

12-8.

Before there were radios and satellite communication systems, ships would communicate with each other by using a string of colored flags. With four blue flags and two red flags, how many six flag signals are possible? Homework Help ✎

Use combinations or refer back to the math notes box in Lesson 10.3.3.