The probability that a batch of light bulbs will be faulty is 0.04
A factory produces 500 light bulbs.
Work out an estimate for the number of light bulbs that will be faulty.
Practise Edexcel GCSE Maths Probability with exam-style questions for Foundation and Higher tier. 100 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.