Step-by-step explanation: To find the probability of rolling a 3, let's use our ratio for the probability of an event which is shown below.
P(event) = number of favorable outcomes/total number of outcomes
Since only one side of a number cube has a 3 on it, the number of favorable outcomes for rolling a 3 is 1 and since there are six sides to a number cube and it's equally likely that the cube will land on any of these sides, the total number of outcomes is 6.
So the probability of rolling a 3 is 1/6.
Notice that 1/6 is already written in lowest terms so it's our final answer.
Nikolai Lobachevsky (A russian mathematician born in 1792) and Bernhard Riemann (A german mathematician born in 1826) are the mathematicians that helped to discover alternatives to euclidean geometry in the nineteenth century.
