# A spinner has 5 equal sections marked 1 through 5. What is the probability of not landing on 4?

$\frac{4}{5}$

#### Explanation:

We have a spinner that can land on numbers 1 through 5 with an equal chance. What is the probability of not landing on 4?

The probability of not landing on 4 is the same as $1 - P \left(\text{landing on 4}\right)$.

$P \left(\text{landing on 4}\right) = \frac{1}{5}$ and so

$1 - P \left(\text{landing on 4}\right) = 1 - \frac{1}{5} = \frac{4}{5}$