| Exam Board | Edexcel |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Arithmetic Sequences and Series |
| Type | Arithmetic progression with parameters |
| Difficulty | Moderate -0.8 This is a straightforward C1 arithmetic sequence question requiring basic application of the constant difference property and the nth term formula. Part (a) involves simple algebra to find p, and part (b) is direct substitution into a standard formula. Both parts are routine exercises with no problem-solving insight required, making it easier than average. |
| Spec | 1.04h Arithmetic sequences: nth term and sum formulae |
The first three terms of an arithmetic series are $p$, $5p - 8$, and $3p + 8$ respectively.
\begin{enumerate}[label=(\alph*)]
\item Show that $p = 4$. [2]
\item Find the value of the 40th term of this series. [3]
\end{enumerate}
\hfill \mbox{\textit{Edexcel C1 Q3 [5]}}