Question

Michelle has a fair number cube. Each face has a different number from 1 through 6. She will roll the number cube twice. What is the probability that she will roll an even number on the first roll and a 5 on the second roll?

Answer 1

2/3

Step-by-step explanation:

3/6 + 1/6 = 4/6 = 2/3

Answer 2

Probability is 1/12.

Step-by-step explanation:

So the chance that she will roll an even number on her first roll is 3 out of 6, or simplified 1 out of 2. On her second roll, the probability that she will roll a 5 is 1 out of 6. To roll these both as a pair consecutively, you would need to multiply their probabilities. You do
`(1)/(2)` x
`(1)/(6)` which is equal to
`(1)/(12)` .