Rolling a 5 on one die the probability is 1 out of 6 or 1/6 so when you add the second die the probability increases as well as the number of outcomes so you have 1/6+1/6 or 2/12. hope this helps
A cube has six sides. On number cubes (also called dice), the sides are numbered 1 through 6. So the probability of rolling a 5 on either cube is 1/6. The probability of rolling a 5 on both cubes is: