A bag contains beads of four different colours: Black, White, Silver and Gold. The table shows the probabilities of picking a Black, White or Silver bead.
| Colour | Black | White | Silver | Gold |
|---|---|---|---|---|
| Probability | 0.4 | 0.12 | 0.28 |
Complete the table.
Sarah picks a bead from the bag 150 times, replacing the bead each time. Work out an estimate for the number of times she picks a Black bead.
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.
