### Home > CCG > Chapter 12 > Lesson 12.1.4 > Problem12-55

12-55.

A jar contains five red, four white, and three blue balls. If three balls are randomly selected, find the probability of choosing:

Use combinations to represent the probabilities.

1. Three white balls.

2. Two red balls and one white ball.

3. Three balls of the same color.

$\frac { _{5} C _ { 3 } + _ { 4 } C _ { 3 } + _{3} C _ { 3 } } { _{12} C _ { 3 } } = \frac { 10 + 4 + 1 } { 220 } \approx 6.8$%