Executive Verdict & Overall Difficulty
The October/November 2024 series presented an evenly balanced exam with an overall difficulty rating of 3.4 / 5.0 (3 Stars). Core procedural questions provided accessible entry marks across both Paper 22 and Paper 42, while multi-step geometric problem solving, vector proofs, and calculus applications served as effective high-grade discriminators.
Where the Marks Were Won and Lost
High-scoring opportunities were concentrated in standard algebraic methods, such as solving simultaneous linear and non-linear equations, applying the quadratic formula, and calculating compound percentages. However, significant mark loss occurred in:
- Non-Right-Angled Trigonometry & Bearings: Combining the cosine rule with multi-step area calculations and three-figure reverse bearings in Paper 42 Question 7.
- Vector Geometry: Expressing fractional vector pathways and providing rigorous geometric reasoning for collinearity or parallel relationships.
- Calculus and Nature of Stationary Points: Finding turning points of cubic graphs and justifying nature via second derivatives or gradient analysis.
- Histograms: Estimating the mean by first calculating class frequencies from varying frequency densities.
Key Examiner Pitfalls
A frequent error was premature rounding during intermediate trigonometry calculations, leading to final answers failing the 3-significant-figure accuracy tolerance. In coordinate geometry, candidates frequently inverted gradients when finding the perpendicular bisector equation.
Strategic Revision & Forecast
Given recent syllabus emphasis, candidates preparing for upcoming series must prioritize combined probability tree diagrams, transformation matrix notation/descriptions, and coordinate geometry involving perpendicular bisectors and circle tangents.