The laws of probability govern the rules and principles that describe how probabilities behave in different situations. These laws provide a formal framework for reasoning about uncertainty and are fundamental to probability theory.

**Here are some key laws of probability:**

- Addition theorems (or additive law) of probability
- Multiplication theorem (or multiplicative law) of probability

## Additive law of Probability:

The Additive Law of Probability, also known as the Addition Rule, describes how to calculate the probability of the union of two or more events.

**There are two versions of the Additive Law:**

- for mutually exclusive events
- for not mutually exclusive events.

â†’ **Addition theorem of probability for mutually exclusive events**

â†’ **Addition theorem of probability for not mutually exclusive events**

## Multiplicative law of Probability:

The Multiplicative Law of Probability is a fundamental principle in probability theory that deals with the probability of the intersection of events.

**There are two main versions of the Multiplicative Law:**

- for independent events
- for dependent events

â†’ **When events are Independent:**

â†’ **When events are dependent:**