http://www.ck12.org Chapter 2. Conditional Probability
2.2 Permutations and Combinations Com-
pared
Here you’ll learn how to identify the difference between permutations and combinations and how to use the formula
for permutations to solve problems.
You have six photographs and you want to choose three to position in three different picture frames. You’re planning
to hang the picture frames horizontally on your wall. How many different possible arrangements could you create?
Do you think there would be at least 25 different ways? Would you be surprised to find out that there are over 100
different ways?
Watch This
First watch this video to learn about permutations.
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter2PermutationsA
Then watch this video to see some examples.
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter2PermutationsB
Watch this video for more help.
MEDIA
Click image to the left for more content.Khan Academy Permutations
Guidance
Permutations and combinations are the next step in the learning of probability. It is by using permutations and
combinations that we can find the probabilities of various events occurring at the same time, such as choosing 3 boys
and 3 girls from a class of grade 12 math students.