Here are the ages of a company's employees.
| 18 | 42 | 34 | 47 | 15 | 58 | 27 |
| 53 | 49 | 36 | 21 | 39 | 32 | 24 |
| 17 | 41 | 28 | 33 | 26 | 54 | 25 |
One of the employees is selected at random. Find the probability that they are younger than 30.
116 exam-style questions on Edexcel GCSE Maths Stem and Leaf. Each one has a worked solution and a mark scheme showing where the marks go.