Question

Use the Counting Principle to find the probability.

rolling a 5 on each of 2 number cubes

Answer 1

2/12

Explanation:

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

Answer 2

1/36

Explanation:

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:

P(A and B) = P(A) × P(B)

P(A and B) = 1/6 × 1/6

P(A and B) = 1/36