Calculate the probability of the first event occurring. Six different outcomes are possible for the roll of a die, and each number can only occur once per roll. Therefore, the probability of rolling a "1" is one in six, or 0.167
Calculate the probability of the second event occurring. The probability of rolling a "2" is still 0.167. By comparison, the probability of rolling an even number is three in six, or 0.5, since there are three even numbers on the six faces.
Continue this process until you have calculated the individual probabilities for each independent event.
Multiply the probabilities together to determine the cumulative probability. For example, the probability of rolling three 2s in a row is:
(0.167)(0.167)(0.167) = 0.0046 or 1/216
The probability of rolling an odd number followed by an even number is:
(0.5)(0.5) = 0.25