When Events Work Together

Part of Combined Events · Section 1 of 5

IntroductionUnit: ProbabilityGCSE

This introduction covers When Events Work Together 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 1 of 5 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

When Events Work Together

Sometimes we need to find the probability of multiple events happening together - like rolling two dice and getting a sum of 7, or drawing two cards and both being red. Understanding how to combine events is crucial for solving complex probability problems.

This topic brings together all your probability knowledge to solve real-world scenarios involving multiple conditions.

Practice questions for Combined Events

A fair coin is flipped and a fair die is rolled. What rule is used to find P(heads AND rolling a 3)?

  • A. Add the two probabilities together
  • B. Multiply the two probabilities together
  • C. Subtract the smaller probability from the larger
  • D. Divide one probability by the other
1 markfoundation

Explain the difference between independent and dependent events in probability. Give an example of each.

2 markshigher

Quick recall flashcards

What are independent events?
Events where one event doesn't affect the probability of the other
For independent events, what is P(A and B)?
P(A and B) = P(A) × P(B)

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