Discrete Mathematics, Discrete Maths, Combinatorics, Permutations, Graph Theory.
the root node “Will it rain today?”, which has two branches “Yes” and “No”. If it will rain, the decision is to take an umbrella, if it will not rain, there are two options: wear a hat or wear sunglasses. A tree is a connected graph with no circuits, it starts with a root node and it branches into