Understanding the Addition and Multiplication Rules of Probability

When working with probability, the Addition and Multiplication Rules can make things a lot simpler. Let's break them down:

1. Addition Rule:

   • This rule helps us find the chance of either event A happening or event B happening.
   • The formula looks like this:
     ( P(A \text{ or } B) = P(A) + P(B) - P(A \text{ and } B) )

2. Multiplication Rule:

   • This rule is used when we want to find the chance of both event A and event B happening at the same time.
   • The formula is:
     ( P(A \text{ and } B) = P(A) \times P(B) )

By using these rules, we can easily figure out different probabilities without getting too confused.