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Permutations and Combinations

Permutations and Combinations. No HW. When you count the total number of possibilities , you have to decide whether order matter. Problems. We have 3 cards A B C. How many ways are there of arranging them?. ABC ACB BAC BCA CBA CAB – 6 A quicker way would be. Read through.

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Permutations and Combinations

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  1. Permutations and Combinations • No HW • When you count the total number of possibilities , you have to decide whether order matter.

  2. Problems • We have 3 cards A B C. How many ways are there of arranging them?

  3. ABC ACB BAC BCA CBA CAB – 6 • A quicker way would be

  4. Read through

  5. Permutation Example

  6. Combination

  7. Examples

  8. You do it! • A class contains 8 boys, 12 girls. 4 are selected to for, a group. • No. of ways choosing 4 people • No. of ways choosing 2 boys, 2 girls:

  9. Answers

  10. Closure

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