| Exam Board | OCR MEI |
|---|---|
| Module | C1 (Core Mathematics 1) |
| Year | 2007 |
| Session | January |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Binomial Theorem (positive integer n) |
| Type | Standard binomial expansion coefficient |
| Difficulty | Easy -1.2 This is a straightforward application of the binomial theorem requiring only substitution into the formula C(6,4) × 5² = 15 × 25 = 375. It's a single-step calculation with no problem-solving required, making it easier than average, though not trivial since students must recall and apply the correct binomial coefficient formula. |
| Spec | 1.04a Binomial expansion: (a+b)^n for positive integer n |
5 Calculate the coefficient of $x ^ { 4 }$ in the expansion of $( x + 5 ) ^ { 6 }$.
\hfill \mbox{\textit{OCR MEI C1 2007 Q5 [3]}}