A random matrix is a grid of numbers that are organized in rows and columns like a table. Each cell in the table can contain a number and those numbers are chosen randomly. That means there is no way to tell beforehand what numbers you'll find. Sometimes the numbers are just random numbers, but sometimes the numbers have special meanings like representing the distance between two places or the price of an item in a store. Random matrices can be used to solve problems or test ideas. For example, you can create a random matrix to see how different numbers affect each other by making changes to the numbers and seeing what happens.