Say that every single class in Full Sail’s Masters Degree in Game Design has a 5% failure rate per month in a 13-month program. These students that fail a single time, will withdraw (drop) from the program the month following their failure; ex. J. Doe fails Month 3, J. Doe withdraws before the start of Month 4.

Given a cohort of 100 that starts the program, about how many are left at the end of the program? Remember that someone can only pass or fail and we are counting only these 100 that start together.