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Probability Probability is the mathematical way to see the chance that an outcome will occur. A probability can be shown in different ways.
 * 1) It can be written as a fraction.
 * 2) It can be written as a ratio.
 * 3) It can be written as a percent. The percent chance an outcome will occur. For example you have 50% chance of flipping heads on a two sided coin.

__Number of Desired Outcomes__ = Probability Total number of outcomes
 * When you are calculating probabilities the equation that you will use is:

Outcome - the result of an event || =Work to do= 1. What is the probability of rolling a 5 on a 6 sided die?

2. What is the probability of rolling a 2 or 3 on a 6 sided die?

3. What is the probability of rolling a 1 on a 6 sided die?

4. What is the probability of rolling a 2 then a 4 on a 6 sided die?

5. What is the probability of rolling a 1, 3 or 5 on a 6 sided die?

6. What is the probability of rolling an even number on a 6 sided die?

7. If you roll two dice what is the probability that their sum will be 12 ? ||

__When you are working with probabilities there are some important words that you should watch out for. When you see the word "or" in a probability problem you will add the probability for each outcome. For example, if you wanted to find the probability of rolling a 2 or 4 on a 6 sided die you will add the probability of rolling a 2 to the probability of rolling a 4.__ [|Click on the link to find more examples.]