Just basic ideas and hints would help.

Thank you so much.

Here is the problem:

Disease transmission, a monte carlo example.

Student has 5% chance of contact with another random student.

Each contact has a 7% chance of disease transmission.

After student is infected, they will not be contagious for the first three days and will become contagious for the fourth and fifth days. The sixth day, the student will not come to school. A student can not be re-infected if he/she is already infected.

Ignoring other variables....

If there are 550 students, what is the change of you catching the disease? Given that you are not the first to have the disease.