Could someone please answer the question in the screenshot?

There are 8 streets to be named after 8 tree types. Ash, Birch, Cedar, Elm, Maple, Pine, Spruce, and Willow. A city planner randomly selects the street names from the list of 8 tree types. Compute the probability of each of the following events. Event A: The rst street is Birch, followed by Elm and then Willow. Event B: The first three streets are Spruce, Elm, and Ash, without regard to order. Write your answers as fractions in simplest form