The daily rainfall, in mm, recorded in a town over 18 days is shown below.
| 04 | 12 | 21 | 08 | 15 | 11 |
| 25 | 09 | 05 | 17 | 13 | 28 |
| 07 | 19 | 22 | 14 | 10 | 20 |
Draw an ordered stem and leaf diagram to show this information.
Key:
A day is picked at random. Work out the probability that the rainfall was more than 20 mm on that day.
