CAPE Pure Mathematics Unit 2 · May/June 2016 · Paper 1 · Question Q22

\sum_{r=1}^n \left(\frac{1}{r} - \frac{1}{r + 1}\right) =

1. (A)\frac{n + 2}{n + 1}
2. (B)-\frac{n}{n + 1}
3. (C)\frac{1}{n + 1}
4. (D)\frac{n}{n + 1}