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This lesson provides mixed Edexcel-style exam questions covering all probability topics from the Edexcel GCSE Mathematics (1MA1) specification. These questions range from Foundation tier (2–3 marks) to Higher tier (5–6 marks) and cover the types of problems that appear across all three papers.
Probability questions on the Edexcel 1MA1 exam typically appear as follows:
| Paper | Calculator | Typical probability questions |
|---|---|---|
| Paper 1 | No | Probability scales, simple calculations, complementary events, basic tree diagrams, Venn diagrams |
| Paper 2 | Yes | Two-way tables, expected outcomes, experimental probability, conditional probability |
| Paper 3 | Yes | Tree diagrams (with/without replacement), algebraic probability, "show that" proofs |
Edexcel Exam Tip: Probability is almost always worth between 8 and 15 marks across the three papers combined. Expect at least one tree diagram question and one Venn diagram question.
A bag contains 3 red, 5 blue and 2 green sweets. A sweet is picked at random. Find the probability that the sweet is:
(a) blue (b) not green
Solution:
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