### Home > CC2 > Chapter 7 > Lesson 7.1.4 > Problem 7-49

Lue is rolling a random number cube. The cube has six sides, and each one is labeled with a different number

What is the probability that he will roll a

or a on one roll? Each number has an equal probability of being rolled. Since there are

total sides, what is the probability of getting any number? Each number has a one-in-six probability of being rolled. Since we can roll either a

or a , we can add the probabilities of these two numbers together. What is the probability that he will roll a

and then a in two rolls? There is a one-in-six probability of Lue rolling a

in the first roll, and there is a one-in-six probability of him rolling a in the following roll. Since the order of the numbers rolled must be taken into account, we must multiply these two numbers together. What is the probability that he will roll a sum of

in two rolls? See part (b).