Permutations and combinations tend to be tricky to figure out when you first encounter them, so we spent some more time looking at examples, including a modification to the concept to find arrangements of letters in a word.

## Today’s links

- Homework: HW 8.6 – More Permutations and Combinations Practice
- Notes: Permutations, combinations, and letter arrangements
- Lesson video 1: How to tell the difference between permutations and combinations (with examples)
- Lesson video 2: Arrangements of letters in a word

## IXL Modules

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