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10 cards from this deck
Events where one doesn't affect the probability of the other
Events where one affects the probability of the other
P(A and B)=P(A)×P(B)P(A \text{ and } B) = P(A) \times P(B)P(A and B)=P(A)×P(B)
When you want both events to happen
P(A or B)=P(A)+P(B)−P(A and B)P(A \text{ or } B) = P(A) + P(B) - P(A \text{ and } B)P(A or B)=P(A)+P(B)−P(A and B)
Events that cannot happen together
P(A or B)=P(A)+P(B)P(A \text{ or } B) = P(A) + P(B)P(A or B)=P(A)+P(B)
To avoid double-counting the overlap
and, both, all
or, either, at least one
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