When calculating a probability, we are comparing the number of favorable outcomes to the number of possible outcomes. To calculate the probability of rolling either 1 or 6 on a die, we will use the Probability Formula.
P=Favorable Outcomes/Possible Outcomes
On the dice there are 6 numbers. This is the number of possible outcomes.
1, 2, 3, 4, 5, 6
Furthermore, there are 2 numbers that are either equal to 1 or equal to 6. This is the number of favorable outcomes.
1, 2, 3, 4, 5, 6
Now we have enough information to calculate P(1or6).
