Okay kiddo, let's talk about set inversion. Do you know what a set is? It's like a group of things put together. Like a group of your toys or a group of your friends. And sometimes, we want to do things with sets, like add them together or take some things away from them.
Now, set inversion is a fancy way of saying we're doing something to a set to figure out what it's not. It's like if you have a big pile of toys, and you pick out all the toys that are not red. You're inverting the set of red toys into the set of non-red toys.
Set inversion can be really useful in lots of things. For example, if you have a list of all the kids in your class who like pizza, you can use set inversion to find the kids who don't like pizza. Or if you have a list of all the animals at the zoo, you can use set inversion to find the animals that aren't mammals.
So, in short, set inversion is when we take a set and figure out what's not in it. It helps us learn more about the things we're looking at.