Question

What is the probability of rolling a one when rolling a cube die once.

Answer 1

In a cube die, it has 6 faces, therefore, there are 6 possibilities when rolling it.

It could be 1, 2, 3, 4, 5, and 6. 6 possible outcomes.

Thus, finding the probability of rolling a one, will be:

$\text{ Probability of rolling a one = }\frac{\text{ No. of faces with one}}{\text{ Number of possible outcomes}}$

$\text{ = }\frac{\text{ 1}}{\text{ 6}}$

$\text{Probability of rolling a one = }\frac{1}{6}$

Therefore, the answer is 1/6.