CAT Quant: Arithmetic vs Algebra vs Geometry Share

QUANT

Aspirants want this as a pie chart, and the reason is sensible. If arithmetic is a third of the section and modern mathematics is a twentieth, the planning follows automatically and nobody has to make a judgment call about where August goes.

The pie chart does not exist in the form people want it. CAT publishes a general syllabus and does not prescribe a fixed chapter-wise or area-wise weightage with marks attached, which means any article giving you exact percentages per area is presenting an observation about past papers as though it were a published allocation. What can be described honestly is which areas have recurred most, and that turns out to be enough to plan with.

Why There Is No Official Split

The distinction that matters here is between what CAT can ask and what CAT keeps asking.

The published syllabus is a boundary. It tells you the areas that are fair game, which is useful mainly because it rules things out. It ranks nothing, so it cannot help you choose between two chapters competing for the same week.

Recurrence is a ranking, built by looking at what past papers actually contained. It tells you where a fixed number of hours is most likely to convert into marks. It is a description of behaviour, not a commitment, and treating it as a commitment is how aspirants end up surprised by a paper that leaned somewhere unexpected.

The paper has also moved in size. Recent papers have run roughly 66 to 68 questions in total, and in the 2022 paper quant carried 22 questions worth 66 marks with a 40 minute sectional limit. A section whose parent paper changes size does not have a fixed internal distribution.

What the Five Areas Contain

Before ranking them it is worth being clear about what each covers, because aspirants frequently misfile a chapter and then misjudge its weight.

Arithmetic covers percentages, profit and loss, ratio and proportion, averages, mixtures and alligation, time speed and distance, time and work, and simple and compound interest. Algebra covers linear and quadratic equations, inequalities, functions, logarithms and progressions.

Geometry covers triangles, circles, quadrilaterals, polygons, coordinate geometry and mensuration. Number system covers divisibility, factors, HCF and LCM, remainders, units digits and bases. Modern mathematics covers permutation and combination, probability and set theory.

Area	Historical recurrence	Why it sits there
Arithmetic	Highest	Recurs heavily and appears inside other areas
Algebra	Highest	Recurs heavily and supplies tools used elsewhere
Geometry	High to medium	Meaningful contributor with a heavier memory load
Number system	High to medium	Rewards pattern recognition over technique volume
Modern mathematics	Lower	Appears regularly in a smaller share

Why Arithmetic and Algebra Lead

Both are at the front for reasons beyond raw count, which is why the ordering is more robust than a percentage would be.

Arithmetic Scores on All Four

It recurs most heavily, its thinking appears everywhere, fluency there is directly visible as saved time, and progress arrives quickly. Within it, percentages, ratio and proportion, averages, profit and loss, time speed and distance, and time and work recur most and feed each other. A firm grip on ratio and proportion questions makes mixtures and alligation considerably less intimidating.

Algebra Is the Tooling Layer

Algebra recurs heavily in its own right and also supplies the machinery used elsewhere. Equations, inequalities, functions and progressions appear inside geometry and number system problems in ways that make weak algebra present itself as weakness in those areas instead, which sends aspirants to fix the wrong thing.

Geometry and Number System Are Not Optional

Both are meaningful contributors. Geometry carries a heavier memory load, which is why it gets postponed and then avoided, and the repair is early exposure in small doses rather than one heroic block in October. Number system rewards pattern recognition, so number system practice works best in short frequent sittings rather than long ones.

What a Lower Share Does and Does Not Mean

This is where frequency information most often gets misused, and the misuse is expensive.

A lower share is not a zero share. Approachable permutation, probability or set theory questions appear regularly, and a candidate who deleted modern mathematics from the plan simply cannot collect those marks when they arrive.

The correct response to lower recurrence is later sequencing and less depth, not removal. Two focused sittings in an area gives you recognition and the ability to attempt an easy question in it, which is a far better return than zero sittings.

There is also a timing argument for blocking the tail rather than scattering it. Three separate one hour visits to probability across two months leave almost nothing behind, while one concentrated week leaves recognition that survives to November.

Turning This Into a Schedule

A ranking is only useful once it has dates attached, so run it as two passes.

The first pass is coverage in sequence order, spending proportionally more time at the front but reaching the end. A workable shape gives arithmetic and algebra together around half the available weeks, geometry and number system rather less, and modern mathematics one concentrated block near the end. The goal of this pass is familiarity, and finishing it matters more than perfecting any part of it.

The second pass is depth, driven by your own error log rather than the generic order. By then you have evidence about where your marks are actually leaking, and that evidence beats any published ranking for your specific case.

The Adjustment Worth Making Early

Whatever the ordering says, schedule the area you find least pleasant earlier than its recurrence alone would justify. It is the one most likely to be quietly deferred until deferring it becomes permanent, and moving it forward costs very little.

Checking the Plan Against Reality

Every four weeks, list the chapters that produced your errors in timed sections and compare that list against what you have been studying. When the two diverge badly, the plan has stopped tracking your weaknesses. Our guide on the quant topics you cannot skip covers the coverage floor beneath any priority order.

Why the Percentages Circulating Online Disagree

Put three published area-wise breakdowns side by side and they will not match, which is itself the clearest evidence that none of them is reading an official figure.

Part of the disagreement is classification. A word problem about work rates set up with two equations can reasonably be filed under arithmetic or under algebra, and different counters file it differently. Do that across a dozen borderline questions and two honest people produce breakdowns several points apart from the same paper.

The rest is sample size. A breakdown built from one paper describes one paper. A breakdown built from five averages across years in which the mix genuinely moved, which produces a stable-looking number that no individual paper ever matched. Neither version is a forecast, and the averaged one is more misleading precisely because it looks more authoritative.

The practical test for any such figure is whether the writer says how many papers they counted and how they classified the ambiguous questions. Almost none do, and a percentage without that method behind it is a guess with a decimal point attached.

The Honest Answer

What percentage of CAT quant is arithmetic, algebra and geometry? Nobody can give you that as a published figure, because CAT does not publish one and the internal mix has moved between years.

What can be said is an ordering that has held up: arithmetic and algebra have recurred most, geometry and number system next, modern mathematics smaller. That ordering is enough to decide where your first six weeks go, which is the actual question underneath the request for percentages.

It is also worth being clear about what the ordering cannot do. It cannot tell you what November contains, and it cannot rank areas for you personally, because your return per hour is a statement about you and the exam together. Recurrence solves the cold start problem. After a few mocks, your own error log should be making the decisions.

If your plan and your errors have drifted apart, an outside read finds it quickly. A CAT preparation strategy review compares the two, and a personalised CAT preparation plan keeps the sequence honest week to week.