| Exam Board | CAIE |
|---|---|
| Module | Further Paper 1 (Further Paper 1) |
| Year | 2021 |
| Session | June |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Proof by induction |
1 Prove by mathematical induction that $2 ^ { 4 n } + 31 ^ { n } - 2$ is divisible by 15 for all positive integers $n$.\\
\hfill \mbox{\textit{CAIE Further Paper 1 2021 Q1}}