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CAT DILRSet TypesStrategy

CAT DILR Set Types and How to Practise Each One

PrepTest Hub Team •Edited by BITS Pilani and IIM alumni •October 30, 2026

Key takeaways

  • DILR has about 22 questions in 4 to 5 sets, so choosing the right sets matters more than speed.
  • Learn the common set types so you recognise the structure in the first minute.
  • Build a grid or table early. Most sets are solved by organising the data, not by clever tricks.
  • Practise whole sets under time, then review how you chose and solved them.

In DILR you do not choose questions. You choose sets, and a good choice is worth more than a quick solution. The more set types you recognise, the faster you can judge which sets are solvable. This guide lists the common types, how to approach each and how to practise. For the choosing step itself, see our set selection guide.

The common types

  • Tables and charts (data interpretation): read the question, then calculate. Time goes on percentages and ratios, so practise quick calculation.
  • Caselets: data in a paragraph. Convert it into a table first.
  • Venn diagrams and set theory: draw the diagram with unknowns and use the totals to solve.
  • Arrangements (linear and circular): place fixed facts first, then use constraints to eliminate options.
  • Scheduling and tournaments: build a grid of slots or matches and track wins and losses.
  • Networks and routes: draw the graph and write the distances beside each edge.
  • Games and selection: list conditions, then test cases systematically.

A general method

  1. Spend the first minute reading the set and the questions. Do not start until you know what is asked.
  2. Build a table, grid or diagram and write every given fact in it.
  3. Solve the easy questions first. Their answers often fill in the grid for the harder ones.
  4. Re-check any assumption you made. One wrong assumption spoils the whole set.

How to practise each type

  • Take two sets of one type a day for three days, then rotate.
  • Time yourself: 25 to 30 minutes for a set in practice, so you have room on exam day.
  • After each set, write how you recognised the type and which fact you used first.
  • Redo a failed set a week later without looking at the solution.

Practise on real sets

Our DILR practice tests have worked solutions. For the mindset on the day, see how to improve DILR accuracy and the time management guide.

Set types and their weight vary from year to year. Use this as a study aid and check the official CAT notice for the latest pattern.

Ready to put this into practice?

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Related guides

How to Improve CAT DILR Accuracy: A Practice Routine That Works DILR accuracy comes from a method: read the whole set, draw the skeleton, branch carefully and check every condition. Here is a routine and a weekly plan. CAT DILR Strategy: How to Pick the Right Sets in 40 Minutes DILR is won by choosing sets well, not by solving everything. Learn a repeatable 5 minute scan, how to spot a good set, when to abandon one and how to practise. CAT VARC Verbal Ability: Odd One Out and Para Summary How to approach the non-passage VARC questions: odd sentence out, paragraph summary and sentence placement, with a method for each. CAT Percentile vs Score: How Percentile Works and What Counts as a Good One Your CAT score is not your rank. Learn how percentile is calculated, why scores are normalised across slots, how sectional percentiles matter and how to set a realistic target.