1 / 12

Notes 6.7 Permutations and Combinations

Notes 6.7 Permutations and Combinations. Permutation – an arrangement of items in a particular order Can use the counting principle or factorials to solve. Factorial: n! = n(n – 1)… 3! = 3*2*1 = 6 4! = 4*3*2*1 = 24 0! = 1. EX 1. In how many ways can 6 people line up?. EX 2.

aysha
Download Presentation

Notes 6.7 Permutations and Combinations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Notes 6.7 Permutations and Combinations

  2. Permutation – an arrangement of items in a particular order • Can use the counting principle or factorials to solve.

  3. Factorial: n! = n(n – 1)… • 3! = 3*2*1 = 6 • 4! = 4*3*2*1 = 24 • 0! = 1

  4. EX 1 • In how many ways can 6 people line up?

  5. EX 2 • If I have 5 pairs of shoes, 8 pairs of pants and 7 shirts, how many different outfits can I make?

  6. Number of Permutations – if all items available are NOT being used • n = items • r = items at a time

  7. EX 3 • How many 4 letter codes can be made if no letter is used twice?

  8. Combination – an arrangement of items where order DOES NOT matter

  9. EX 4 • Evaluate:

  10. EX 5 • There are 20 books on a reading list. In how many ways can you choose 4 books to read?

  11. EX 6 • A DJ wants to select 5 songs from a CD that contains 12 songs. How many 5-song selections are there?

  12. EX 7 • A pizza menu allows you to select 4 toppings at no extra charge from a list of 9 possible toppings. In how many ways can you select 4 or fewer topping?

More Related