4MA0 Foundation June 2017 Paper 1R Q6
6 Here are the first four terms of a sequence.
5 9 13 17
One of these four terms is a square number.
(a) Write down this square number. (1)
(b) Write down the next term of the sequence. (1)
150 cannot be a term of this sequence.
(c) Explain why. (1)
| Scheme | Marks |
|---|---|
| 9 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| 21 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| Explanation | B1 |
| (1) | |
| (3 marks) |
Notes
B1: e.g all the terms are odd and 150 is even or 149 is in the sequence or \(4n + 1 = 150\) does not have an integer answer