CAT DILR syllabus 2026

DILR is the only CAT section with no syllabus at all, not even a reconstructed one. The IIMs can set anything that involves reading a structure and reasoning from it, and over the last five years they have. What follows is a catalogue of formats, which is the closest thing to a syllabus this section has.

22 questions, 40 minutes, 66 marks. Four or five sets, usually four to six questions each. It is the second section, sat immediately after VARC, and the marking follows the same rules as the rest of the CAT pattern.

DILR structure

Data interpretation formats

• Tables: raw figures with missing cells to be deduced from totals and constraints
• Bar and column charts, including stacked and grouped, sometimes with a secondary axis
• Line graphs showing a trend across periods, often paired with a table of the same data
• Pie charts, usually two compared, where the percentages are of different bases
• Caselets: the data is given entirely as prose and you build the table yourself
• Radar, bubble and scatter plots, which appear occasionally and catch people out through unfamiliarity rather than difficulty
• Mixed sets where a table and a chart describe the same situation from different angles

CAT rarely gives you data you can simply read off. Almost every DI set in recent papers has a logical constraint attached, which is why the two halves of this section stopped being separable.

Logical reasoning formats

• Seating and linear arrangements: people or objects in a row, a circle or around a table, with conditional constraints
• Grid and matrix puzzles: matching names to roles, cities, years and values across several attributes
• Binary logic: statements from people who always lie or always tell the truth, or a mix
• Venn diagrams and set theory with three or more overlapping categories and partial totals
• Games and tournaments: knockouts, round robins, points tables, tie-break rules
• Scheduling: days, slots, shifts and machines under capacity constraints
• Routes, networks and distribution: flows between nodes, capacities, shortest paths
• Selection and ordering under stated conditions, where the constraints interlock
• Data sufficiency, which CAT has used sparingly in recent years
• Quantitative puzzles built on number properties, averages or simple arithmetic constraints

Why set selection decides this section

Most candidates who score badly in DILR were not short of technique. They were eleven minutes into an unsolvable set with nothing on the scoresheet. With four or five sets and 40 minutes, you get roughly eight to ten minutes each. Attempting three sets well beats attempting five badly, and the scoring supports that arithmetic.

How to judge a set in three minutes

Spend the first three minutes reading every set before solving anything. Judge a set on how constrained it is, not on how familiar the format looks.

• Count the fixed conditions. A set with many absolutes usually collapses quickly.
• Count the free variables. Few constraints and many unknowns is where time disappears.
• Look for an entry point. If you cannot see the first deduction within 30 seconds of reading, the set is likely to be slow.
• Check the question stems. Sets where the questions ask for a single value are faster than sets asking how many arrangements are possible.
• Count the questions. A six-question set is worth more time than a four-question set of the same difficulty.

When to abandon a set

Set a hard limit and honour it. If you are four minutes in with no part of the structure resolved, leave. The sunk cost is the trap, and every year people lose ten minutes refusing to accept a set was a poor choice.

Partial attempts are a legitimate strategy

CAT has moved towards sets where the first two questions are gettable and the last two are deliberately hard. Taking the accessible questions and leaving the rest is not a compromise, it is how the section is designed to be played. Three sets attempted at two thirds each will usually beat two sets solved completely.

What has been appearing recently

The clean four-set paper has largely gone. Recent papers mix a table with a logical constraint inside one set, use non-standard visuals, and hide a simple structure behind an unfamiliar context. The underlying reasoning has not become harder. The presentation has.

Common mistakes

• Starting to solve before reading all the sets
• Choosing a set because the format is familiar rather than because it is constrained
• Building an incomplete diagram and then reasoning from it
• Refusing to leave a set after investing time in it
• Ignoring the TITA questions, which carry no penalty
• Practising only standard sets from books, which trains pattern recognition the exam has moved past

How DILR differs from data interpretation in other exams

CAT is the only one of the three major MBA papers that treats data interpretation and logic as a single timed section. In XAT DI sits inside the quantitative section and is calculation-heavy rather than puzzle-heavy. On the GMAT the equivalent is Data Insights, which also absorbed data sufficiency and gives you a calculator.

Frequently asked questions

Is there a syllabus for CAT DILR?

No, and there is no reconstructed one either. The formats above are patterns from past papers, not a topic list.

How many sets are in CAT DILR?

Four or five, with four to six questions each, making 22 questions.

How much time do I get for DILR?

40 minutes, and the section locks at the end.

Is DILR the hardest CAT section?

It has the lowest average attempt rate of the three, which is why percentile jumps there are larger than in QA for the same raw score.

Do I need to attempt all the sets?

No. Three well-chosen sets usually beat five rushed ones.

Is data sufficiency asked in CAT?

Occasionally, within DILR. It is not a separate section as it is on the GMAT.

Is a calculator allowed in DILR?

Yes, the basic on-screen calculator available throughout the paper.

How many DILR questions should I attempt?

Accuracy matters more than count here because each wrong MCQ costs a mark. Most strong scores come from fewer sets solved cleanly.

Can DILR be prepared for in two months?

Set selection improves quickly with practice. Speed on individual set types takes longer.

Are DILR sets repeated from past papers?

No, but the underlying structures recur, which is why working through past sets is useful even though the specific sets will not return.