P X o r Y P X P Y An example of two mutually exclusive events is a wheel of fortune. Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur or how likely it is that a proposition is true. The value is expressed from zero to one.
What is the probability that a blue marble gets picked.
The probability that one of the mutually exclusive events occur is the sum of their individual probabilities. Below you will find a wide range of our printable worksheets in chapter Probability of section Data and Probability Money and TimeThese worksheets are appropriate for Third Grade MathWe have crafted many worksheets covering various aspects of this topic likely unlikely certain or impossible possible outcomes combinations organized list and many more. The total number of possible outcomes. Directly or indirectly probability plays a role in all activities.