Fifteen people work in your office, and one morning, 8 of them showed up bringing
their lunch with them, 5 are planning on eating lunch out, and the rest are on a diet, so
they will not be eating lunch. You need to choose one employee to stay in during lunch
and answer the telephone. If you choose an employee at random, what are the
chances that you choose one who either brought their lunch, or is on a diet?
