How to Build a Free DILR Practice Set Bank for CAT

What do you do when you have burned through your entire mock series with four months still on the clock? You have solved every set in the package twice. You half-remember the answers now, so re-solving teaches you nothing. Buying a second series feels wasteful, and the new sets will run out too. The fix is not more purchases. It is to build your own free DILR practice sets bank from material that already exists, then organise it so well that you never run dry and never re-solve a set on autopilot. This guide shows you exactly how to source, tag, and rotate that library.

By the end you will have a source list, a cataloging table that makes any set findable in seconds, and a re-solve schedule that turns old sets into fresh practice.

Four free sources for DILR practice sets

You do not need a paid series to fill a DILR practice library for CAT 2026. Four free sources, combined, give you more variety than any single package sells. The trick is to pull from all four rather than leaning on one, because each source skews toward a different set type and difficulty band. Mix them and your bank covers the full spread the exam can throw at you.

Names are deliberately generic above because the sources are external. Find them, download what is genuinely CAT-standard, and ignore the rest. A bloated folder of low-quality sets slows you down more than it helps. If you want to confirm a downloaded set is actually CAT-grade before you file it, the method in our guide on how to rate a DILR set in 60 seconds gives you a fast screen.

The cataloging system that makes it usable

A folder of 200 PDFs is not a practice bank. It is a download graveyard. The difference between the two is a catalogue: a simple table where every set has four tags so you can find the exact one you need on any given day. Without tags, you scroll. With tags, you filter and pull a set in seconds. Build the table in a spreadsheet, one row per set. That single habit is what separates aspirants who plateau from those who keep improving.

Five columns, nothing more. The set ID tells you the source and number so you can find the file. The other four tags do the real work, and the next section covers exactly how to fill them.

How to tag each set in 90 seconds

Each tag answers a specific question about the set, and together they let you pull practice that targets a real weakness instead of grabbing whatever is on top. Spend ninety seconds per set and you build a library that works for you for months. Here is what goes in each field.

• Type: The structure of the set. Linear arrangement, circular arrangement, distribution, games and tournaments, networks and routes, quant-based DI, reasoning grid. This is the tag you filter on most, because weakness usually clusters by type.
• Difficulty: Easy, medium, or hard on your own scale, judged by how the set felt, not by what the source labelled it. Your scale is the one that matters for planning your sessions.
• Time: Your actual minutes on the first attempt, with errors noted in brackets. A set you cleared in 12 minutes is a different training tool from one you took 22 minutes to half-solve.
• Re-solve date: For any set you got wrong or abandoned, write a date two weeks out. Sets you cleared cleanly get marked done. This single field feeds the protocol in the next section.

Tag honestly. If you label a hard set medium because your ego prefers it, your catalogue lies to you and you stop trusting it. The difficulty tag in particular rewards a consistent personal scale. Once your tagging is consistent, you can also cross-check whether your self-rated difficulty matches your solve time, which is the start of reading your own data the way our note on cutting a DILR set from 18 to 12 minutes describes.

The spaced re-solve protocol

Most aspirants never re-solve, and the few who do, do it wrong: they re-solve the next day, while the answer is still in working memory, and feel falsely confident. Real learning shows up only after a gap. Spaced repetition is the principle here, and it applies to DILR sets as cleanly as it does to vocabulary. The two-week gap forces you to rebuild the logic from scratch rather than recall yesterday's answer.

This is where the catalogue pays off. Without the re-solve date column, you would never remember which sets to revisit or when. With it, your weekly plan writes itself: each week, you re-solve whatever sets came due, and you drill the types that keep resurfacing. To verify your re-solve answers are actually right and not lucky, pair this with the fast self-check in our piece on the 30-second DILR answer check.

Your set-bank build checklist

Use this as the build order. Work through it once to set the system up, then the weekly rhythm runs on its own. The goal is a bank you can pull from for the entire run to the exam, not a one-week sprint of downloading.

Once the system runs, check your work against your real percentile. Feed a recent mock score into the CAT score predictor to see how a stronger DILR section moves your overall percentile and IIM eligibility, and read the official CAT exam overview if you want to re-check the section structure and timing your bank should mirror.

Quick answers on building a DILR set bank

How many DILR sets should a CAT 2026 practice bank hold?

Aim for 80 to 120 catalogued sets by exam day. That covers every common type at three difficulty tiers, with spare sets to re-solve. You do not need thousands. A smaller bank that is tagged, timed, and re-solved beats a folder of 500 untouched PDFs. The quality of your tagging matters more than the raw count, because the tags are what let you pull the exact set you need on any given day.

Where can I find free DILR sets for CAT without paying for a series?

Four free sources cover most of what you need. IIM CAT previous-year-question sets are the gold standard for format accuracy. Free sets from common prep portals fill in volume by type. The DILR-style sections of old XAT papers add harder reasoning that stretches you past CAT difficulty. Community-shared set threads surface unusual structures you will not find in standard material. Pull from all four, then catalogue what you keep so the bank stays usable.

What should I tag each DILR set with in my catalogue?

Tag four fields per set: type (the set structure, such as linear arrangement or tournament), difficulty (easy, medium, or hard on your own scale), solving time (your actual minutes on the first attempt), and a re-solve date two weeks out for any set you got wrong. These four tags turn a pile of files into a searchable library. When you want a hard arrangement set on a weak day, you filter to type plus difficulty and pull one in seconds.

Why re-solve DILR sets I have already done?

Re-solving a set you got wrong after a two-week gap tests whether you learned the underlying structure or just memorised that one answer. Spaced repetition works here because the gap forces real recall, not pattern matching from yesterday. If you re-solve cleanly in less time, the method stuck. If you stumble in the same place, that set type is still a gap and needs targeted drilling. Schedule the re-solve in your catalogue so it actually happens.

Build the spreadsheet today, pull your first twenty sets this week, and tag every one as you solve it. A free DILR practice set bank you actually maintain will outlast any series you could buy, and it scales right up to exam day. For the rest of the series on data interpretation and logical reasoning, browse our full set of CAT preparation guides and slot each new method into the bank you have built.