In a box there are only black pens, blue pens and green pens
A pen is taken at random from the box.
The table shows the probability of the pen being blue or green.
| Colour | Black | Blue | Green |
|---|---|---|---|
| Probability | 0.37 | 0.18 |
Complete the table to show the probability that pen will be black.
324 exam-style questions on AQA GCSE Maths Probability. Each one has a worked solution and a mark scheme showing where the marks go.