**CHAPTER7**

**Probability and Counting Rules **

**In This Chapter**

- Using the addition rule of probability
- Using the multiplication rule of probability
- Calculating conditional probabilities
- Using the Bayes’ theorem to calculate conditional probabilities
- Using the fundamental counting principle
- Distinguishing between permutations and combinations

Now that we have arrived at the second of three basic probability chapters, we’re ready for some new challenges. We need to take the probability concepts that you’ve mastered from Chapter 6 and put them to work on the next step up the ladder. Don’t worry if you’re afraid of heights like I am–just keep looking ...

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