1. What is the difference between a permutation and a combination?
2. What are some practical examples of when you would use each?
3. How many ways are there to choose a valid password on a computer system?
4. What is the probability of winning a lottery?
5. Is there a link between two computers in a network?
6. How can I identify spam e-mail messages?
7. How can I encrypt a message so that no unintended recipient can read it?
8. What is the shortest path between two cities using a transportation system?