4MA0 Higher January 2017 Paper 3 Q2
2 Three integers have a mean of 7, a median of 5 and a range of 14
Find the three integers.
(2)
| Scheme | Marks |
|---|---|
| 3 × 7 (=21) | M1 |
| 1, 5, 15 | A1 |
| (2) | |
| (2 marks) |
Notes
M1: or for 3 numbers with a total of 21
or 3 numbers with a median of 5
or 3 numbers with a range of 14
or (\(a + c =\)) 3 × 7 – 5 (=16)
A1: numbers can be in any order