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ProbabilityExam Tips

Exam Tips

Part of Combined Events — GCSE Mathematics

This exam tips covers Exam Tips 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 4 of 4 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.

Topic position

Section 4 of 4

Practice

11 questions

Recall

2 flashcards

Exam Tips

  • Identify event type - independent, dependent, or mutually exclusive
  • "And" means multiply - P(A and B)
  • "Or" usually means add - P(A or B)
  • Watch for overlap - subtract P(A and B) if events can occur together
  • Use tree diagrams for complex scenarios

Keep building this topic

Read this section alongside the surrounding pages in Combined Events. That gives you the full topic sequence instead of a single isolated revision point.

Types of Combined EventsWhen Events Work TogetherKey Facts

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

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

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