A couple of real life examples of probability in action are coin tosses and the rolling of dice. If each coin or die is evenly weighted, the probability of the outcome is determined by using a mathematical formula.
In the case of a coin toss, the probability that it will land with the "heads" side up is 50 percent. Therefore, the coin will probably land "tails" up 50 percent of the time as well.
The probability of seven dots being displayed when a pair of dice is thrown is calculated by the number of possible combinations that will equal seven. Two six-sided dice have six possible combinations, which add up to seven. This makes the probability of rolling a seven much higher than that of rolling a two or a 12. In exact terms, the probability of throwing a seven is 16.67 percent, whereas the chance of rolling a two or 12 is 2.78 percent.