CAT 2026 QA Chapter-Wise Weightage: Most Important Topics from Arithmetic, Algebra and Number System

Arithmetic is the single most important chapter in CAT 2026 QA, contributing an expected 8–10 questions out of 22 — nearly 40% of the entire section — making it the highest-return area for your preparation time.

The Quantitative Ability section in CAT 2026 will carry 22 questions to be solved in 40 minutes, following the pattern set since CAT 2021. Based on analysis of CAT 2021–2025 papers, Arithmetic, Algebra, and Number System together account for over 70% of all QA questions every year. Understanding chapter-wise weightage allows you to allocate preparation hours where they yield the most marks, rather than studying all topics equally.

• CAT 2026 QA section: 22 questions, 40 minutes; MCQs carry +3 for correct and -1 for wrong answers.
• Arithmetic consistently dominates with 8–10 questions per paper (35–45% weightage).
• Algebra contributes 5–7 questions, covering functions, quadratic equations, and progressions.
• Number System adds 2–4 questions — fewer in count but highest in difficulty.
• Geometry and Modern Math together account for the remaining 4–6 questions.
• TITA questions within QA carry no negative marking — always attempt these first.

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CAT 2026 QA Section Overview

The QA section tests undergraduate-level mathematics under time pressure. CAT 2026 will retain the 22-question, 40-minute format introduced in CAT 2021. Questions are a mix of MCQs and TITA (Type In The Answer) items. TITA questions carry no negative marking, making them a low-risk opportunity. The section is scored on a scaled basis, with the sectional score used to compute your overall percentile alongside VARC and DILR.

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CAT 2026 QA Chapter-Wise Weightage

The table below shows the expected chapter-wise question distribution for CAT 2026 QA, based on analysis of five years of CAT papers (2021–2025). Arithmetic has held the top position every year. Geometry has gradually increased its share since 2022, while Number System has become slightly less frequent but harder when it appears.

Expected weightage is based on CAT 2021–2025 paper analysis and may vary for CAT 2026.

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Arithmetic: Most Important Topics for CAT 2026 QA

Arithmetic is the backbone of CAT QA, contributing 35–45% of questions in every recent paper. It rewards consistent formula recall and structured practice more than creative problem-solving — making it the chapter that delivers the highest marks per hour of study. In CAT 2024, Arithmetic alone accounted for 9 of 22 QA questions.

Time and Work and Time-Speed-Distance frequently appear as TITA questions in CAT. Attempt these first during the exam — no negative marking means every thoughtful attempt adds value. Students who clear these two topics thoroughly can expect to secure 5–6 correct answers from Arithmetic alone.

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Algebra: Most Important Topics for CAT 2026 QA

Algebra contributes an expected 5–7 questions in CAT 2026 QA, making it the second most important chapter after Arithmetic. CAT tests conceptual Algebra — functions, inequalities, and logarithms — not just equation solving. Students who master these three high-frequency topics gain a measurable advantage in the section.

CAT 2023 and CAT 2024 both featured 2 questions on functions — the most within Algebra. Logarithm questions frequently combine with inequalities, so practice them together as a unit. AP and GP questions in CAT often have a data sufficiency flavour — knowing the standard sum and nth-term formulas is enough for most variants.

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Number System: Most Important Topics for CAT 2026 QA

Number System contributes 2–4 questions in CAT 2026 QA and is consistently rated the hardest chapter. CAT tests remainders (using cyclicity, Fermat’s Little Theorem), divisibility rules, and factorial-based problems. The chapter has lower weightage than Arithmetic or Algebra, but a single Number System question can consume 4–5 minutes if you are not prepared for its specific logic patterns.

Cyclicity of last digits and properties of factorials are the two must-know concepts if you are targeting a 99+ percentile QA score. For students aiming at 85–90 percentile, clearing Arithmetic and Algebra fully is more efficient than spending excessive time on Number System.

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Geometry, Mensuration and Modern Math for CAT 2026

Geometry and Mensuration together contribute an expected 3–5 questions in CAT 2026 QA, up from 2–3 questions seen before 2022. Triangles — particularly properties of medians, altitudes, angle bisectors, and the incenter — are the most frequently tested topic. Circles and coordinate geometry appear next. Mensuration questions focus on 3D shapes such as cylinders, cones, and spheres, often combining two shapes in a single problem.

Modern Math (Permutations and Combinations, Probability, and Set Theory) contributes 1–2 questions and carries the lowest weightage in QA. P&C is the most tested among these topics. These are high-scoring questions if you know the fundamentals — do not skip them entirely, but do not over-invest time either.

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CAT 2026 QA Preparation Strategy Based on Chapter Weightage

Use the weightage data to build a time-proportionate study plan. Spend at least 40–45% of your total QA preparation time on Arithmetic before moving to Algebra and Geometry. Here is an evidence-based allocation based on question distribution in CAT 2021–2025:

• Attempt TITA questions first in the QA section — zero negative marking allows risk-free attempts.
• Skip difficult Number System questions if you are not confident — one unsolved question costs 4 minutes that could solve two Arithmetic questions.
• Target 14–17 correct answers in QA for a 90+ percentile score, based on CAT 2024 scoring patterns.
• Solve at least 3 full-length CAT mocks with sectional time limits to build the pacing instinct needed for 40 minutes on 22 questions.
• For a 99+ percentile in QA, you need to attempt 19–21 questions correctly — that requires mastery across all chapters, not just Arithmetic.