Higher June 2018 Paper 2 Q17
17. Find the \(n\)th term of the following sequence.
3, 7, 13, 21, 31, 43, …. [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(n^2 + n + 1\) | B2 | CAO B1 for sight of \(n^2 \pm \ldots.\), not for \(n^2\) alone OR B1 for \(an^2 \pm \ldots\) where \(a \ne 1\) |
| (2) |