This Year 9 probability quiz has 10 short questions for pupils aged 13-14. Type your answer, check it straight away and read the explanation when you get one wrong.
Year 9 probability quiz: the 10 questions
- P(head) for a fair coin?Two equally likely outcomes.
- P(not rain) if P(rain) = 0.2?1 - 0.2.
- How many outcomes for two dice?6 Γ 6.
- P(even) on a 10-sided die numbered 1 to 10?5 even numbers.
- What is the symbol for intersection?Overlap of sets.
- What is the symbol for union?A or B.
- P(certain event)?Certain = 1.
- P(impossible event)?Impossible = 0.
- Expected number of heads in 100 flips?100 Γ 1/2.
- n(A) = 6, n(B) = 4, n(A β© B) = 2. n(A βͺ B)?6 + 4 - 2.
How to use this Year 9 probability quiz
First, answer every question without a calculator unless the question says so. Then check your answer and read the short explanation. If you get fewer than 7 right, revise the probability: sample spaces and Venn diagrams lesson and try again later. After that, try the multiple choice questions or the probability: sample spaces and Venn diagrams worksheet.
Finally, take this quiz again before a test, because quick retrieval helps you remember. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.


















