There are some counters in a bag. The table shows the number of counters of each colour.
| Colour | Red | Blue | Yellow | Green |
|---|---|---|---|---|
| Number of Counters | 7 | 2 | 5 | 3 |
A counter is taken at random from the bag.
Verify that the probability that the counter is green is 317\displaystyle \frac{3}{17}173.
Verify that the probability that the counter is not blue is 1517\displaystyle \frac{15}{17}1715.
236 exam-style questions on AQA GCSE Maths Probability. Each one has a worked solution and a mark scheme showing where the marks go.