CAT DILR Strategy — How to Attempt Sets

In CAT 2025, many strong students scored below their ability in DILR. Not because they could not solve the sets. Because they chose the wrong sets to attempt and ran out of time before finishing the ones they should have started with.

DILR is a time management problem dressed as a reasoning problem.

The structure of CAT DILR

The DILR section has 22 questions across roughly 5 to 6 sets. Each set has 4 questions. You have 40 minutes. The sets are not arranged in order of difficulty. A brutally hard set can appear first. An easy one can appear fourth. You have no way of knowing until you have read the set.

This is the core problem. You cannot attempt all sets in 40 minutes and solve them well. You need to choose which 3 or 4 sets to invest in and which to leave. Most students choose wrong. Not because they are bad at reasoning but because they do not have a set selection framework.

How to select sets in 90 seconds

Spend the first 8 minutes of the section doing nothing but reading the opening lines of each set. Do not attempt any questions. Just read enough to understand what type of set it is and get a sense of the data volume.

As you read each set, rank it quickly. Mark it as green, yellow or red in your mind. Green means you recognise the structure and the data is manageable. Yellow means it looks doable but complex. Red means it is unfamiliar or the data volume is intimidating.

Attempt all green sets first. Then attempt yellow sets if time permits. Leave red sets entirely.

What makes a set green, yellow or red

Green sets have clean, structured data. Tables with clear relationships, arrangements with a limited number of entities, binary logic puzzles where the constraints are explicit. Green sets also tend to have questions that follow directly from the data without requiring multiple inferential leaps.

Yellow sets have more data, more entities, or more ambiguous constraints. They are solvable but slower. You can recognise a yellow set when you need to re-read the setup more than once before you understand the structure.

Red sets are ones you have never seen a format like before, or sets with enormous data tables where you cannot see how to extract clean answers. These appear in every CAT paper. They are designed to trap students into investing time with no return. The correct response is to not attempt them.

The most common DILR mistakes

The first mistake is sunk cost. A student spends 12 minutes on a set, gets stuck, and keeps pushing because they feel they cannot "waste" the time already spent. This is wrong. Twelve minutes wasted is not made worse by spending four more. Cut the loss and move.

The second mistake is attempting sets in the order they appear on screen. The order on screen is random from a difficulty standpoint. Scroll through all sets briefly before starting any.

The third mistake is incomplete setup. Students who do not build the full constraint table before attempting questions will often get the first question right by luck and then get the remaining three wrong because they have not mapped the full logic. Always complete your setup before answering.

How to practice for DILR

Practice set selection as a separate skill. Take a DILR section and spend only the first 8 minutes selecting sets without attempting any questions. Then check how well your selection matches the actual difficulty. Do this ten times. Your ability to read set difficulty will become much sharper.

Practice completing setups before answering. This feels slower initially. It becomes faster within two weeks because you stop getting stuck mid-set.

Practice doing fewer sets more accurately. Attempt only 3 sets in a 40 minute session and aim for 11 out of 12 correct. This is more valuable than attempting 5 sets and getting 12 out of 20 correct.