In a bag there are only red counters, blue counters and white counters. A counter is taken at random from the bag. The table shows the probability of the counter being red and blue.
| Colour | Red | Blue | White |
|---|---|---|---|
| Probability | 0.4 | 0.3 |
Verify that the probability that the counter will be white is 0.3.
323 exam-style questions on OCR GCSE Maths Probability. Each one has a worked solution and a mark scheme showing where the marks go.