2.5. Combinations http://www.ck12.org
2.5 Combinations
Here you’ll learn the difference between a permutation and a combination and solve problems involving combina-
tions.
You’ve been given a menu at a restaurant and you’re trying to decide what to eat. You have a choice of 15 different
entrees, 12 different side dishes and 4 different breads. How many possibilities do you have for lunch? Does it
matter which order you choose them from the menu? In other words, when you order will it make any difference if
you tell the waitress your bread order before your entree order?
Watch This
First watch this video to learn about combinations.
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter2CombinationsA
Then watch this video to see some examples.
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter2CombinationsB
Watch this video for more help.
MEDIA
Click image to the left for more content.Khan Academy Combinations
Guidance
If you think about the lottery, you choose a group of lucky numbers in hopes of winning millions of dollars. When
the numbers are drawn, the order in which they are drawn does not have to be the same order as on your lottery