# 7th Grade Math - Permutations

Now that we've learned about combinations, it's time to take a look at a very similar concept called Permutations. Whereas a combination is a grouping of objects or events where order doesn't matter, a permutation is a grouping where order is very relevant. You might use a permutation to determine how many different ways there was to perform your chores in order. You could make your bed, take out the trash, and then feed the dog. Or maybe you want to feed the dog, take out the trash and then make your bed. Once you have determined all the possible ways of performing these tasks in order, you have figured out the permutation of your chores.

Watch Edward Burger demonstrate permutations over three different lectures in today's free 7th grade math video. Make sure you click on the forward button directly to the left of the time stamp in order to move to the next lecture as there are a total of three on the video. Then, try figuring out how you could use permutations in the real world! Maybe you need to create a combination for a bike lock. Did you know that four numbers can be ordered in a possible 10,000 ways if you allow for number repetition! That's a lot of possible lock combinations.