| Exam Board | OCR MEI |
|---|---|
| Module | Paper 2 (Paper 2) |
| Year | 2022 |
| Session | June |
| Marks | 2 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Geometric Sequences and Series |
| Type | Find sum to infinity |
| Difficulty | Easy -1.2 This is a straightforward infinite geometric series question requiring only recognition of the common ratio (r = 0.5) and application of the standard formula S = a/(1-r). It's a direct, single-step calculation with no problem-solving or conceptual challenge beyond basic recall. |
| Spec | 1.04j Sum to infinity: convergent geometric series |r|<1 |
| Answer | Marks |
|---|---|
| 2 | 50 |
| Answer | Marks |
|---|---|
| 100 | M1 |
| A1 | 1.1 |
Question 2:
2 | 50
soi
1−0.5
100 | M1
A1 | 1.1
1.1
[2]
M1
for equating coefficientsFind the sum of the infinite series $50 + 25 + 12.5 + 6.25 + \ldots$. [2]
\hfill \mbox{\textit{OCR MEI Paper 2 2022 Q2 [2]}}