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Sample space
The set of all possible outcomes of a random experiment
DeMorgan’s Law
Equally likely outcomes
Whenever a sample space consists of N possible outcomes that are equally likely, the probability of each outcome is 1/N
Probability of a union
P(A U B) = P(A) + P(B) - P(A ∩ B)
Probability of a complement - P(Ec)
P(Ec) = 1 - P(E)
Multiplication Rule
The total number of ways to complete an operation is n1 x n2 x n3….. x nk
