Here is a list of seven numbers. One of the numbers is hidden.
| 11 | 6 | 7 | 10 | 7 | 9 | ? |
The mean of the numbers is 9.
Find the value of the hidden number.
Practise CIE IGCSE Maths Averages with exam-style questions for Core and Extended tier. 12 questions, matched to the CIE IGCSE Maths (0580) specification and written in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) 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.