There are two types of random variables which are determined by the outcome of a random experiment.

- Discrete random variable: can only take particular (discrete) values, for example rolling a dice can give us only one of six options.

- Continuous random variables: can take any value in a given interval, such as the probability a long jumper jumps X meters. X in this case can be any real number.

Classifying the random variable forms the base of our approach to every question in probability.

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