Here is a list of nine numbers. One of the numbers is hidden.
| 4 | 2 | 7 | 3 | 5 | 2 | 6 | 4 | ? |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
The mean of the numbers is 4.
Find the value of the hidden number.
Practise OCR GCSE Maths Averages with exam-style questions for Foundation and Higher tier. 48 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.