Question

If you roll a diel what is the probability that you would roll a 6 or 7. Give your answer as a simplified fraction.

Answer 1

On a die, there are only 6 faces, numbered 1 to 6.

The probability of rolling a 6 is:

`P(6)\text{ = }(1)/(6)`

This is because there is only one face that has a 6 on it.

The probability of rolling 7 is 0. This is because there is no face with 7 on it.

The probability of rolling a 6 or 7 is the sum of the probabilities of rolling a 6 and a 7, that is:

`P(6\text{ or 7) = }(1)/(6)+\text{ 0 = }(1)/(6)`