1. Unit 4 Section 4-5 – Day 3

2. 4-5: Permutation Rule  Permutation Rule : The arrangement of n objects in a specific order using r objects at a time.  Notation : n P r  Formula :  With permutations, ORDER matters

3.  Example 1: Simplify. 4 P 2 6 P 2 6 P 5 4 P 4 5 P 0 Section 4-5

4.  Example 2: A television news director wishes to use three news stories on an evening show. One story will be the lead story, one will be the second story, and one will be the closing story. If the director has a total of 8 stories to choose from, how many possible ways can the program be set up? Section 4-5

5.  Example 3: How many different ways can a chairperson and an assistant be selected for a research project if there are 7 scientists available? Section 4-5

6. Homework:  Pg 220 – 221 : 1 – 12, 13 a-d Section 4-5