DILR10 min read

Can You Improve DILR in the Last Month Before CAT?

Published September 17, 2026
Blog cover reading Can You Improve DILR In The Last Month, with a peach open book icon in a soft tinted circle.
DILR

With four weeks left, DILR is the section most aspirants have given up on and the one where the fastest gains are still available. Those two facts are related: the section gets abandoned because people believe improvement means getting better at reasoning, which is slow, and they are measuring the wrong thing.

Most of what separates a poor DILR section from a good one is decisions rather than reasoning, and decisions change in days. That is why a month is genuinely enough here in a way it is not for reading comprehension, provided the month goes into the right work.

Four weeks is enough to change what you commit to. Run timed blocks across CAT DILR practice chapters and audit the decisions rather than the answers.

Key Takeaways
  • Reasoning ability moves slowly. Selection and abandonment move in days, and they carry most of the section.
  • Run the untimed test first: if you can solve failed sets without a clock, the constraint is decisions.
  • The three levers are the opening scan, a written walk-away time, and the exit check before leaving a set.
  • Track productive minutes rather than score, since DILR totals carry heavy paper variance.
  • Do not start learning new set types in the final fortnight; consolidate the representations you have.

First, Establish Which Problem You Have

This takes one evening and it determines whether the month is worth spending here at all.

Take a DILR section you did badly. With no clock, solve the sets you failed, taking as long as you need.

If you can solve most of them, your reasoning is adequate and the constraint was time and choice. That is the good case, because both respond quickly, and the month should go into decision practice.

If you cannot solve them even untimed, the constraint is genuine reasoning in those set types, and four weeks will produce less. The honest response there is to build the two or three set types you can still learn properly and accept a narrower section rather than attempting to cover everything.

Common Mistake

Spending the final month solving as many sets as possible. Volume without a change in decision-making reproduces the same section repeatedly. A candidate doing forty sets in four weeks with no selection drill will select exactly as badly on the day as they did in September.

The Three Levers Worth Pulling

In a short window, do fewer things properly. These three carry nearly all the available gain.

The Final Month DILR Levers
  1. The opening scan. Two to three minutes reading every set without solving, then choosing. It feels like lost time and it is the highest return period in the section.
  2. A written walk-away time. Decided before the section and written on the rough sheet, not judged in the moment at minute nine.
  3. The exit check. Thirty seconds before abandoning a set, collecting what your partial structure already answers and entering every reasoned type-in.

The Scan Changes the Most

A choice made after seeing all the sets is categorically better than one made by starting at the top. Candidates who adopt the scan in the final month usually see productive minutes rise immediately, because the single decision it improves is the one carrying the most weight.

The Walk-Away Time Has to Be Written

Everyone agrees with the rule and breaks it on a set that feels close. That feeling is produced by effort already invested rather than by the set's solvability, and a number written down two minutes ago is far easier to obey than an intention formed last week.

The Exit Check Recovers Real Marks

Marks are assigned per question, not per set, so a set you never fully resolved may already have settled two of its questions. Type-in questions among them carry no negative marking, so entering a reasoned value is free. Thirty seconds spent here is frequently worth more than the six minutes preceding it.

LeverTime to buildEffect on the section
Opening scanA week of practiceLarge, immediate
Written walk-away timeDaysCaps the downside
Exit checkDaysRecovers uncollected marks
New set typesWeeksToo slow for the final fortnight

A Four Week Structure

Concrete beats general when the window is short, so here is a shape you can follow.

Week one is diagnosis and the scan. Run the untimed test, then do four timed blocks where the only change is that you read every set before committing and write down your intended count and walk-away time. Review by decision rather than by answer.

Week two adds the ranking drill. Five sets, ninety seconds each without solving, ranked by expected solvability, then all five solved and the ranking checked. Ten minutes, twice in the week, alongside the timed blocks.

Week three consolidates representations. For each recurring set type you already know, confirm you have one standard way of drawing it and use it every time. This is consolidation, not learning, and the distinction matters.

Week four is rehearsal. Timed blocks with no new material, the full routine every time, and the last few days spent making the opening three minutes automatic rather than deliberate.

Exam Tip

Include blocks where two of the sets are not solvable in the time available. A practice block where everything is tractable never exercises the skip decision, which means the first time you use it seriously is in the exam. That is the situation the whole month is meant to prepare you for.

What Not to Do in the Final Month

Three responses are common and all three waste the window.

Do not start learning new set types in the last fortnight. Recognition is built by repeated contact over weeks, and a type met twice in October will not be familiar in November. Consolidate what you have instead.

Do not chase volume. Forty sets solved without a change in how you choose produces a candidate who is slightly faster at the wrong decisions. Eight sets a week with a proper decision review beats thirty without one.

Do not abandon the section. Candidates who write DILR off in the final month and pour everything into quant lose the cheapest available marks, since the levers here work faster than anything in the other two sections at this stage.

Mentor Insight

Mentors working with candidates in the final month find the same pattern. The candidate believes they need to get better at solving, the untimed test shows they can already solve, and four weeks of decision practice moves the section further than three months of set solving did. The diagnosis is what unlocks it, and almost nobody runs it.

Decisions Move Faster Than Reasoning

Scan, walk-away time, exit check. Three habits, four weeks, and they work on any paper.

Work Through CAT DILR Chapters

What to Measure While the Month Runs

Sectional totals are too noisy to guide you over four weeks, so track the inputs.

Productive minutes is the primary figure: of your forty minutes, how many went to sets that produced marks. This rises as selection improves and it rises before the score does.

Sets read before committing is the second. If the answer is one, the scan has not taken hold, and no other improvement will compensate for that.

Sets attempted against sets finished is the third. A large gap means your count is too high for your current setup speed, and the fix is selectivity rather than pace.

If those three are moving and the score is flat, the preparation is working and has not been rewarded yet. DILR totals carry a great deal of paper luck, which is exactly why judging a four week programme on two mock scores is unreliable.

The Set Types Worth Confirming

Arrangements, games and tournaments, scheduling, distribution, selection, networks, tables, caselets and Venn based sets have all recurred, and the mix has swung between years. Confirm you have a representation for each you already know rather than adding new ones. Working selection based sets is a reasonable place to test whether a representation is actually automatic.

The Last Three Days

Stop introducing anything. Rehearse the opening three minutes until they need no thought, since that sequence is what carries you through the start of the real section when adrenaline makes deliberate decisions unreliable. Our guide on spotting a solvable set in two minutes covers the judgment the scan depends on.

What to Do If the Untimed Test Goes Badly

The minority case deserves a real plan rather than a sentence, because writing the section off entirely is the wrong response even here.

If you genuinely cannot solve failed sets without a clock, the honest position is that broad coverage is no longer available in four weeks. What is available is depth in two or three set types, chosen for how often they have recurred and how comfortable you already are with them. A candidate who can reliably finish arrangements and distribution sets has a workable section, because they only need the paper to contain one or two of what they know.

That is a narrower strategy and it is a real one. Combined with a disciplined scan, it means you open only the sets in your two types and leave everything else without guilt, which is a coherent plan rather than the improvised version most candidates end up running on the day.

What it rules out is spending the month sampling every set type in the hope of general improvement. With four weeks, breadth produces familiarity with nothing, and the section is decided by whether you can finish what you start.

The Answer

Can you improve your DILR score in the last month before CAT? For most aspirants, yes, and more than in either other section, because most of the gap is decisions rather than reasoning.

Run the untimed test first, because it tells you which case you are in and therefore whether the month should go into decisions or into consolidating a narrower set of types. Most candidates find they can already solve, which is the finding that redirects everything.

Then spend the four weeks on three habits: read every set before committing, write your walk-away time down, and check what is answerable before you leave anything. None of them requires new reasoning ability, all of them work on a paper nobody has seen, and together they change more in four weeks than volume changes in three months.

Quick Check
  • Can you solve, untimed, the sets you failed under time?
  • Do you read every set before committing to one?
  • Is your walk-away time written down before you start solving?
  • Do you check what is answerable before abandoning a set?

If DILR has been the section you dread, the final month is a better time to address it than it feels. A CAT preparation strategy review will tell you which of the two problems you have, and a personalised CAT preparation plan can hold the four week structure together.

The Cheapest Marks Left on the Table

Candidates who write DILR off in the final month are abandoning the fastest gains available to them.

Build My Weekly Plan

Frequently Asked Questions About Improving DILR Late

Can you improve your DILR score in the last month before CAT?

For most aspirants yes, because the gap is usually decisions rather than reasoning. Selection, abandonment discipline and the exit check all change within days, unlike reasoning ability, which moves over months.

How do I know whether a month will help me?

Solve a bad section again with no clock. If you can complete the sets you failed, the constraint was time and choice, and four weeks of decision practice will move it. If you cannot, the constraint is reasoning and the gains will be smaller.

Should I learn new set types in the final month?

Not in the last fortnight. Recognition is built by repeated contact over weeks, so a type met twice in October will not be familiar in November. Consolidate the representations you already have instead.

What should I track rather than the score?

Productive minutes, sets read before committing, and the gap between sets attempted and sets finished. All three move before the sectional total does, which carries a great deal of paper variance.

From the Optima Learn product

Practice DILR sets, chapter by chapter

CAT DILR practice across LR puzzles and DI sets, each with a worked solution.

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