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What are the two laws of probability

The two laws or rules of probability are:

  • Multiplication rule
  • Addition rule

As per multiplication rule,

  • P (A ∩ B) = P(B).P(A|B) [When A and B are not independent events]
  • P(A ∩ B) = P(A).P(B) [When A and B are independent event]

As per addition rule,

  • P(A∪B) = P(A) + P(B) – P(A∩B)

Learn more here: Probability and Statistics

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