Trinomial tree

A trinomial tree is a way of thinking about numbers. It's a kind of triangle, with three corners and three numbers in each corner. The numbers go up like a triangle, with the top one being the biggest. This triangle can help us figure out how numbers change when we move from place to place. For example, if we want to know how prices for different things change in different places, we can use a trinomial tree to help us figure it out.