Question

What is the probability of rolling a 1 or a 4 on a number cube labeled 1 through 6?

Answer 1

`1/6+1/6=2/6=1/3`

Explanation:

For each number, there is a `1/6` probability of rolling it (so `1/6` for the 1 and also `1/6` for the 4).

This means that the probability of rolling either a 1 or a 4 on a given roll is `1/6+1/6=2/6=1/3`