| Exam Board | OCR |
|---|
| Module | Stats 1 (Statistics 1) |
|---|
| Year | 2018 |
|---|
| Session | March |
|---|
| Topic | Proof |
|---|
2 Angela makes the following claim.
\begin{displayquote}
" \(n\) is an odd positive integer greater than \(1 \Rightarrow 2 ^ { n } - 1\) is prime"
\end{displayquote}
Prove that Angela's claim is false.