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Bell Work. How many different ways can you arrange the letters in “may”?. Permutations. A permutation is a selection of a group of objects in which order is important. In our introductory example, we have 6 permutations. Video on Permutations. Permutations - Free Math Video by Brightstorm.
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Bell Work How many different ways can you arrange the letters in “may”?
Permutations A permutation is a selection of a group of objects in which order is important. In our introductory example, we have 6 permutations. Video on Permutations Permutations - Free Math Video by Brightstorm http://brightstorm.com/math/algebra-2/combinatorics/permutations/
How to Calculate Number of Permutations n is the number of items r is the amount of items taken at a time In our introductory example, n is equal to 3 and r is equal to 3. How would you use the “line method” to solve this problem?
Example 1 Suppose that you want to select a president, vice president, and treasurer for this class. How many different ways can you select these class officers? (Note that there are 23 students in this class.)
Example 2 In every Indian’s game, there are 9 hitters. How many different ways can the 9 hitters be arranged?
Example 3 How many different ways can you rearrange the letters in “math”?
Bonus! • An ATM code consists of 4 single digits. • How many possible combinations exist if no number can be repeated? • How many possible combinations exist if the numbers can be repeated?