## CBSE Class 9 Maths Chapter 15 Revision Notes: Probability

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## CBSE Class 9 Maths Chapter 15 Revision Notes: Probability

Probability is defined as the likelihood or chance that an event will occur. It is defined as the numerical method of measuring uncertainty involved in a situation. To understand and measure the chance, we perform the experiments like tossing a coin, rolling a die and spinning the spinner etc.

**Terms related to Probability:**

**Sample space:**It is the set of all possible outcomes in an experiment.**Trial**: An action which results in one or several outcomes.**Experiment:**An experiment is defined as an action or process that results in welldefined outcomes.**Event:**The collection of some outcomes of the experiment.