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CAT DILRSet SelectionStrategy

CAT DILR Strategy: How to Pick the Right Sets in 40 Minutes

PrepTest Hub Team •Edited by BITS Pilani and IIM alumni •October 2, 2026

Key takeaways

  • Spend the first 4 to 5 minutes scanning all sets before solving any.
  • Prefer sets with clear conditions, small case-work and questions that do not depend on each other.
  • Set a hard limit per set and abandon a set that is not yielding after the limit.
  • Practise set selection itself, not just solving.

In DILR, almost everyone can solve a set if given unlimited time. The paper does not give you that. The difference between candidates is mostly the quality of their choices in the first five minutes. A student who solves three well-chosen sets will usually beat a student who spends the whole section stuck on one hard set.

The 5 minute scan

Open the section and read each set quickly, without trying to solve it. For every set, note three things: how long the description is, how many separate conditions you must track and how the questions are phrased. Rank the sets from "looks clear" to "looks messy". Start with the clearest. This scan costs a few minutes and saves far more than it spends.

What a good set looks like

  • Clear, countable conditions. Each rule can be written as a short note or a cell in a table.
  • A small search space. Few people, few days or few categories, so that case-work stays manageable.
  • Questions you can answer independently. If one question depends on the previous answer, one mistake spoils the set.
  • No large calculations. Data interpretation sets that need long multiplications are slower than they look.

What a bad set looks like

Long narratives with many entities, rules that interact in non-obvious ways, tables with unusual units and questions that start with "if" followed by a new condition on top of a complicated base. These are not impossible, but they are expensive. Leave them for the end.

A simple solving routine

  1. Draw the structure first: a table, a grid, a tree or a timeline.
  2. Place every definite fact before you consider any case.
  3. When you are stuck, branch on the item with the fewest options and write each case compactly.
  4. Answer the easy questions first, even if they are listed late.
  5. Check the answer against the conditions before moving on.

Decide when to abandon a set

Set a limit before you start: about 8 to 10 minutes for a four or five question set. If at that point you have solved fewer than two questions and see no way forward, stop and move on. The time you have already spent is gone either way; the question is how to use the time that remains.

How to practise

Take sectional DILR tests under a timer and, after each one, rewrite the order in which you would have attempted the sets and why. Our free CAT DILR tests are built from sets of four to six questions with full solutions, and the full-length mock lets you rehearse the 40 minute section the way it appears on exam day. For the bigger picture, see how to prepare for CAT 2026.

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