plumiConditional probability: OCR GCSE Maths questions
Every OCR GCSE Maths exam question on P9 Conditional probability, 2017–2025, with its mark scheme and examiner’s report.
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All 10 questions on Conditional probability, as a list
- June 2025, Paper 4, Q22 (5 marks): A school has 90 students in Year 11. • 50 of the students study French. • 59 of the students study Spanish. • 4 of the students do not study either of these lan
- November 2024, Paper 6, Q17 (7 marks): An online company is tracking the timing and condition of its deliveries. The probability that a parcel arrives on time is 0.6. When the parcel arrives on time,
- June 2024, Paper 5, Q23 (5 marks): In a survey, 50 people are asked which sports they watch. The results are shown on the Venn diagram. % Football Athletics 10 6 4 1 5 16 7 1 Golf (a) One person
- November 2023, Paper 6, Q12 (4 marks): A cafe owner recorded information about customer orders for coffee. They recorded whether the customer asked for milk (M) and whether the customer asked for sug
- November 2022, Paper 4, Q16 (2 marks): A salesroom sells various types of car. Some cars are electric (E), some are petrol (P), some are both and some are neither. The Venn diagram below shows the sa
- November 2021, Paper 5, Q16 (5 marks): In a group of 60 students, 40 own a smartphone, 27 own a tablet and 8 own neither. A student is chosen at random from those that own a tablet. Find the probabil
- November 2021, Paper 6, Q11 (8 marks): In a class of 30 students • 17 study French (F) • 20 study German (G) • 2 do not study either subject. (a) Complete the Venn diagram. F G 2 (b) Two of the 30 st
- November 2019, Paper 5, Q16 (5 marks): 50 people attended an outdoor activity day. • 40 took part in walking. • 18 took part in sailing. • 3 did neither activity. One of the people who walked is chos
- June 2019, Paper 5, Q18 (6 marks): 21 people travelled to a meeting. • 12 used a train. • 6 used a car. • 7 did not use a train or a car. • Some used a train and a car. Two people are chosen at r
- June 2017, Paper 5, Q18 (5 marks): In a group of 120 adults, 85 watch football, 78 play a sport and 20 do neither. Find the probability that an adult chosen at random from those who watch footbal
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