Updated November 2026. These KCSE 2026 Mathematics Paper 2 (121/2) predicted questions are built from past-paper trends: we ranked the topics that past KCSE Mathematics Paper 2 papers test most often, then wrote original practice questions on them. They are not leaked, official or guaranteed questions, and this site is not linked to KNEC or KICD. Use them to practise the areas most likely to appear, alongside your full syllabus revision.
KCSE Mathematics 121/2 prediction: most commonly tested topics
The ranking below comes from the topic coverage of past KCSE papers, as summarised in our paper guides. It is a ranking, not an exact count: exam papers change every year.
| Rank | Topic | How it is usually tested |
|---|---|---|
| 1 | Matrices and transformations | Inverse, solving simultaneous equations, matrix of a transformation |
| 2 | Vectors | Position vectors, ratio theorem, collinearity |
| 3 | Probability | Tree diagrams, with and without replacement |
| 4 | Statistics | Mean, quartiles, standard deviation, histograms, ogives |
| 5 | Differentiation | Gradient, tangents, stationary points, velocity |
| 6 | Integration | Area under a curve, trapezium rule |
| 7 | Compound interest, growth and depreciation | Formula A = P(1 + r/100)n |
| 8 | Circle theorems | Angles, tangents, chords, cyclic quadrilaterals |
| 9 | Sequences and series | AP and GP terms and sums |
| 10 | Longitudes and latitudes | Distance along great and small circles, time difference |
| 11 | Variation | Direct, inverse, joint and partial variation |
Free sample: 3 KCSE 2026 Mathematics Paper 2 predicted questions
Q1. Find the inverse of the matrix [[3, 2], [4, 3]].
Marking scheme
Determinant = 9 − 8 = 1, so the inverse is [[3, −2], [−4, 3]].
Q2. A bag has 4 red and 6 blue balls. Two are picked without replacement. Find the probability both are red.
Marking scheme
4/10 × 3/9 = 12/90 = 2/15.
Q3. KSh 50,000 is invested at 8% p.a. compound interest. Find the amount after 2 years.
Marking scheme
50,000 × 1.08² = 50,000 × 1.1664 = KSh 58,320.
Full set: 17 more predicted questions with marking scheme
17 more predicted questions with full marking schemes are locked. They cover every topic in the table above.
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Frequently asked questions
Are these the real KCSE 2026 Mathematics Paper 2 questions?
No. Nobody outside KNEC knows the real questions, and any site claiming a leak is lying or breaking the law. These are original practice questions written by the CBC Guide team, predicted from the topics past KCSE papers test most often.
Which topics come up most in KCSE Mathematics Paper 2 (121/2)?
The most commonly tested areas in past papers are Matrices and transformations, Vectors, Probability, Statistics. The full ranked list is in the table above.
How do I get the full set of predicted questions?
The first 3 questions are free. The remaining 17, each with a marking scheme, unlock with the KSh 20 Day Pass or the KSh 500 Monthly Pass, paid by M-Pesa. The passes do not auto-renew.
How should I use predicted questions in the last days before the exam?
Answer each question under time, mark it with the scheme, then go back to your notes for any topic you got wrong. Do not skip topics that are not on this list, because KNEC can test any part of the syllabus.
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