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15 cards from this deck
The action or process carried out to generate a result
Any possible result that can occur from a trial
Specific result or group of results we are interested in
P(E)=successful outcomestotal outcomesP(E) = \frac{\text{successful outcomes}}{\text{total outcomes}}P(E)=total outcomessuccessful outcomes
0≤P(E)≤10 \leq P(E) \leq 10≤P(E)≤1 (between 0 and 1 inclusive)
P(E)=1P(E) = 1P(E)=1 (guaranteed to happen)
P(E)=0P(E) = 0P(E)=0 (cannot possibly happen)
Events with exactly the same chance of happening
Each possible choice has an equal chance of being picked
All outcomes are equally likely to occur
52 cards
4 suits of 13 cards each
26 red cards and 26 black cards
All outcomes must be equally likely to occur
Simplify fractions to their lowest terms
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