This key facts covers Key Facts within Combined Events for GCSE Mathematics. Revise Combined Events in Probability for GCSE Mathematics with 11 exam-style questions and 2 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 2 of 4 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 4
Practice
11 questions
Recall
2 flashcards
Key Facts
- Independent Events: One event doesn't affect the other
- Dependent Events: One event affects the probability of the other
- Mutually Exclusive: Events cannot happen at the same time
- Addition Rule: P(A or B) = P(A) + P(B) - P(A and B)
- Multiplication Rule: P(A and B) = P(A) × P(B|A)
- For independent events: P(A and B) = P(A) × P(B)