Quantitative Aptitude in SSC CGL Tier-1: Topic Weightage from Five Years of Papers
Quantitative Aptitude is the section that decides most SSC CGL results, and the one where preparation time is most often misallocated. Students spend weeks on topics that appear once in three papers and skim the ones that appear four times in every paper. This post counts what actually shows up.
Method: we classified all 325 Quant questions in the 13 Tier-1 papers from 2021 to 2025 in the EnsureU previous-year set by topic. Counts are per paper of 25 questions.
Topic weightage per paper
| Topic | Questions per paper | Typical question |
|---|---|---|
| Percentage family (percentage, profit and loss, discount, interest) | ≈ 5 | "A shopkeeper marks 40% above cost and gives 15% discount. Profit percent?" |
| Simplification, surds and indices | ≈ 4 | "Find the value of √(108) + 3√12 − 2√75." |
| Geometry (triangles, circles, chords, tangents) | ≈ 2.5 | "In ∆ABC, DE ∥ BC and 5AE = 3EC. If AB = 6.4, find DB." |
| Mensuration (2D and 3D) | ≈ 2 | Cylinders, cones, spheres, hemispheres; surface area and volume. |
| Data interpretation (bar, pie, histogram) | ≈ 2 | One chart, one or two questions on ratios or percentages read from it. |
| Trigonometry (identities, heights and distances) | ≈ 1.5 | "If 8 cot θ = 7, find the value of…" |
| Number system, LCM and HCF, divisibility | ≈ 1.5 | "45yz0 is divisible by 40. Maximum value of y + z?" |
| Time and work, pipes | ≈ 1.5 | "A and B together in 12 days; A leaves after 4 days…" |
| Ratio, proportion, partnership | ≈ 1 | Investments for different periods; profit shares. |
| Speed, time and distance; boats and trains | ≈ 1 | A thief at 250 m; a police car at 70 km/h. |
| Averages, ages, algebra (x + 1/x), mixtures | ≈ 2 combined | Short, formula-driven questions. |
What the numbers say
Arithmetic is half the section. Percentage and its relatives, simplification, ratio, averages, time and work, and speed together are 13–14 questions per paper. These are the fastest questions in the section for a prepared student, and the ones most worth getting to 90% accuracy first.
Geometry plus mensuration plus trigonometry is about six questions. This is the block that separates a 35/50 from a 45/50. It rewards a short list of memorised results (basic proportionality theorem, chord and tangent properties, the standard trig identities, volume formulas) more than it rewards raw practice volume.
Data interpretation is one chart. Two questions on average, read off a bar or pie chart. They are almost always ratio or percentage questions; the only mistake students make is reading the wrong bar in a hurry.
Preparation order that follows from this
- Weeks 1–2: percentage, profit and loss, discount, simple and compound interest. Learn the fraction equivalents (12.5% = 1/8, 16.67% = 1/6…) until they are automatic. This is the single biggest block.
- Week 3: simplification, surds, indices, and the x + 1/x algebra family. Mostly recognition of forms.
- Weeks 4–5: geometry and mensuration. Make a one-page sheet of results and use it until you don't need it.
- Week 6: trigonometry identities and heights and distances; number system; time and work; speed and distance.
- Throughout: one full previous-year paper a week under timing. The analysis afterwards shows accuracy by topic, so you can see whether the weeks are landing.
A note on speed
With 25 minutes for 25 questions (the share of the hour we recommend in the Tier-1 time split), the section is a one-minute-per-question race, but the questions are not equal. Arithmetic questions should average 40 seconds so that geometry can have two minutes. If the time chart in your results shows Quant at 30 minutes or more, the fix is usually in the arithmetic block, not in the hard topics: it is the "easy" questions taking 90 seconds that starve the rest.
Practise the arithmetic block untimed on the SSC CGL practice page until the fraction equivalents and the standard shortcuts are reflexes, then move to timed papers. The order matters: speed built on shaky method produces wrong answers, and with −0.5 per wrong answer, a fast wrong answer is worse than a slow blank; the arithmetic of that trade-off is in negative marking: attempt or skip. The Reasoning section gets the same treatment in what Tier-1 Reasoning actually asks.