We covered and looked at sample problems from Ch. 4-1 Review and Preview of Probability and 4-2 Basic Concepts of Probability. These included the following concepts: Probability, chance, odds, Thomas Malthus, Rare Event Rule, Even, simple event, sample space, the denotation of the probability of event A as P(A), the definition of probability, the definition of subjective probability, the Law of Large Numbers, complement, unlikely, unusual, definition of odds and odds against, and pay off odds.