1. Research finds that of all the ACCA exam participants, 90% will successfully complete it. In 2019, 5 students commenced the course. Calculate the probability that no more than one student fails.

2. Research finds that of the students entering a degree programme, 15% will fail. In 2020, 4 students commenced the course. Calculate the probability that all 4 students will successfully pass.

3. The average number of homes sold by the Fidelity Realty company is 3 homes per day. What is the probability that exactly 2 homes will be sold tomorrow?