Question

When a cube with sides numbered1 through 6 is rolled one time, whatis the probability of rolling a 4 orgreater?

Answer 1

First, notice that each outcome has 1/6 probability to land. Since the cube has 6 sides, and we want to know the probability of rolling a 4 or greater, then the probability is:

`P(4\text{ or greater)}=(1)/(6)+(1)/(6)+(1)/(6)=(3)/(6)=(1)/(2)`

therefore, the probability of rolling a 4 or greater is 1/2