## Geometry: Common Core (15th Edition)

$0$
To calculate probability, we need to divide the number of chances for a certain outcome to occur by the total number of outcomes. In this case, there are $0$ reading teachers, and 30 teachers in total. When we divide 0 by 30, we get $\frac{0}{30}=0$, which is the probability of choosing a reading teacher, or $P(\text{reading})$.