Please help me!! I've been stuck in this problem for too long. I can't figure out where I went wrong. The Problem:
A probability experiment consists of rolling a four​-sided die and spinning the spinner shown at the right. The spinner is equally likely to land on each color. Use a tree diagram to find the probability of the given event. Then tell whether the event can be considered unusual.
​Event: rolling a number less than 4 and the spinner landing on blue