Need a little extra help in understanding the topics in this class? Look no further than this LibGuide, brought to you by the library!

**A joke**: A "combination lock" should really be called a "permutation lock". The order you put the numbers in matters. (A true "combination lock" would accept both 10-17-23 and 23-17-10 as correct.)

**Module 5**

- Permutations and CombinationsPermutations are for lists (order matters) and combinations are for groups (order doesn’t matter).
- Calculator tool for nCr (combinations)Give this tool a try
- Calculator tool for nPr (permutations)Another good tool to try

**Module 6**

- Discovering Math: Advanced Probability (module 6&7) (watch through Testing Probability – Robot Trials)This program introduces and develops concepts of probability. Topics include: how to calculate probability of some types of random events, how probability can be used in determining costs of insurance, types of random variables (discrete and continuous), independent and dependent events, compound events, conditional probability, normal distributions, and theoretical, experimental, and simulation methods for determining probabilities

**Module 7**