Intermediate Algebra (6th Edition)

$P(white)=0$
We are given that the probability of an event is equal to the number of ways that the event can occur divided by the number of possible outcomes. The spinner is divided into 8 parts, so there are 8 possible outcomes. The spinner has 0 white sections. Therefore, $P(white)=\frac{0}{8}=0$. In other words, there is no possible way for a spin to land on a white section, since the spinner has no white sections.