| Exam Board | OCR MEI |
|---|---|
| Module | C2 (Core Mathematics 2) |
| Year | 2009 |
| Session | January |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Arithmetic Sequences and Series |
| Type | Find term or common difference |
| Difficulty | Moderate -0.8 This is a straightforward arithmetic progression question requiring only basic formula application: finding the common difference from given terms, then using standard formulas for the nth term and sum of terms. Both parts are routine calculations with no problem-solving insight needed, making it easier than average but not trivial since it requires correct formula manipulation across two parts. |
| Spec | 1.04h Arithmetic sequences: nth term and sum formulae |
6 An arithmetic progression has first term 7 and third term 12.\\
(i) Find the 20th term of this progression.\\
(ii) Find the sum of the 21st to the 50th terms inclusive of this progression.
\hfill \mbox{\textit{OCR MEI C2 2009 Q6 [5]}}