If you roll two dice What is the probabiltity of rollong a seven (the number on the dice add up to 7) on or before the eighth roll?

To find the probability of rolling a seven with two dice on or before the eighth roll, we first determine the probability of rolling a seven in a single roll, which is 6/36 or 1/6, since there are six combinations that yield a sum of seven. The probability of not rolling a seven in one roll is 5/6. Therefore, the probability of not rolling a seven in eight rolls is (5/6)^8. Thus, the probability of rolling at least one seven in eight rolls is 1 - (5/6)^8, which is approximately 0.6651 or 66.51%.