Set Functions, Sample Spaces, and Axioms of Probability

Free SOA Exam P (Probability) lesson in General Probability. 25 min read, ~3,740 words.

Inclusion-exclusion:; for three events add back the triple intersection. Complement rule:, fastest path to "at least one" or "none.". De Morgan's Laws: and; complementing flips the operation. Partition formula: if partition, then. Three axioms: non-negativity, normalization, and countable additivity underpin every probability rule. Equally likely outcomes:, valid only when the...

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