50 people were asked if they like tea, coffee and hot chocolate. Every person liked at least one of the drinks. 17 of the people like all three drinks. 31 of the people like hot chocolate. 34 of the people like tea. 21 of the people like tea and coffee. 7 of the people like tea and hot chocolate but not coffee. 2 of the people like coffee and hot chocolate but not tea.
Two of the 50 people are chosen at random. Work out the probability that they both like coffee.
Practise Edexcel GCSE Maths Conditional Probability with exam-style questions for Foundation and Higher tier. 28 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.