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12 cards from this deck
Multiple events (two or more)
Break down into separate single events
Both events happening
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)
Independent events
One event doesn't affect the other
At least one event happening
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)
Mutually exclusive events
Cannot both happen at the same time
Multiply
Add
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