In a bag of marbles there are
8 red marbles 12 blue marbles 5 green marbles
Sarah takes one of the marbles at random.
Write down the probability that Sarah takes a blue marble.
Practise AQA GCSE Maths Probability with exam-style questions for Foundation and Higher tier. 212 questions, matched to the AQA GCSE Maths (8300) 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.
