A strategy in which a player uses probabilities to decide which strategy to use is called a mixed strategy.
In game theory, a player's strategy is any choice they select in a situation where the result is influenced by both their own and other players' actions. The primary focus of discipline is when a player's behavior or activities in a game interfere with those of other players.
An assignment of a probability to each pure strategy is a mixed strategy. When a mixed strategy is used, it is frequently because a pure strategy can't be specified for the game in a sensible manner. This enables a player to choose a pure strategy at random. Since probabilities are continuous, a player has access to an endless number of mixed strategies.
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