A group of students from a Swedish school are selected for a study. The color of the eyes of the students are noted as below:
| Color of Eyes | Number of Students |
|---|
| blue | 7 |
| brown | 5 |
| black | 11 |
| grey | 10 |
| green | 2 |
What is the probability that the color of a student's eyes, chosen randomly, is green?