CAT 2026 is near and most of you are at your practicing stage. Caselets, Reasoning Based DI, Quant Based Reasoning, Venn Diagram, Special Charts, Scheduling Based Puzzle, Distribution Based Puzzles, Tables, Games & Tournament, Bar Graphs, Network & Routes, Ranking & Ordering, Arrangement are some of the most-asked topics in LRDI section. Before diving in further, let’s get into the reality – Most CAT aspirants are naturally drawn toward the QA or VARC section, except for the fact that they are masters of the LRDI section. That is a mistake. And if you’re serious about a 99+ percentile and a seat at a top IIM, it’s a mistake you cannot afford to make in 2026.
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Why LRDI Is the Most Decisive Section in CAT?
In QA, someone with a strong engineering background has a head start. In VARC, someone who reads excessively for years has a natural edge. But LRDI can be a level playing field. This is because it tests pure logic, pattern recognition, and structured thinking. These are skills you can genuinely build from scratch with the right guidance.
More importantly, the LRDI section can have a very strong impact on your overall percentile. For example, if two candidates have similar QA and VARC scores but one of them has performed well in the LRDI section, the gap in their final percentiles can be big. That’s the leverage this section gives you.
What iQuanta’s Data Tells Us: 8 Years of CAT LRDI Decoded
iQuanta has done something incredibly valuable for every CAT aspirant by analysing every LRDI set asked in CAT from 2017 all the way through CAT 2024 across all slots. That’s 114 sets tracked, categorised, and decoded.
Caselets, Reasoning Based DI, and Quant Based Reasoning alone account for over 41% of all LRDI sets in the past eight years. Here’s the complete list:
| Sub-Topic | Count | Frequency (CAT 2017 – 2024) |
| Caselets | 18 | 15.79% |
| Reasoning Based DI | 16 | 14.04% |
| Quant Based Reasoning | 13 | 11.40% |
| Venn Diagrams | 10 | 8.77% |
| Special Charts | 9 | 7.89% |
| Scheduling Based Puzzles | 9 | 7.89% |
| Distribution Based Puzzles | 8 | 7.02% |
| Tables | 7 | 6.14% |
| Games & Tournaments | 7 | 6.14% |
| Bar Graphs | 6 | 5.26% |
| Network & Routes | 5 | 4.39% |
| Ranking & Ordering | 3 | 2.63% |
| Arrangement | 3 | 2.63% |
The Must-Master LRDI Topics for CAT 2026
Caselets
The trick here is speed of comprehension and structured note-taking. iQuanta’s modules teach you exactly how to set up a framework quickly so you’re not re-reading the paragraph four times.
Reasoning Based DI
These sets reward candidates who can hold multiple data constraints in their head simultaneously. Practice is everything here.
Quant Based Reasoning
These topic require you to apply basic mathematical logic like ratios, averages, counting within a reasoning framework. iQuanta’s shortcut techniques are particularly powerful here because they teach you to see the mathematical structure beneath the surface of the problem, dramatically cutting down your solving time.
Venn Diagrams
Venn Diagrams are one of the most learnable topics in LRDI. Once you understand the inclusion-exclusion principle and how to set up multi-set diagrams efficiently, these sets become reliable scoring opportunities.
Scheduling Based Puzzles & Special Charts
Scheduling puzzles checks if you can map people, tasks, or events across a timeline. Special Charts check your ability to read and interpret unfamiliar data formats quickly. Both require specific techniques that iQuanta’s structured modules cover in depth.
Your LRDI Game Plan for CAT 2026
Here’s what your focus should look like over the next few months:
Start with Caselets, Reasoning Based DI, and Quant Based Reasoning, master these three completely before moving on. Then build comfort with Venn Diagrams and Scheduling Puzzles. Once you’re confident in these five areas, you’ve covered nearly 55% of all LRDI territory from the last eight years.
Using iQuanta’s resources, the LRDI daily practice sets and past CAT LRDI video solutions are available without any cost and are an excellent starting point. Solve at least one full LRDI set every single day, time yourself, and always review your approach not just whether you got the answer right, but how fast and how cleanly you got there.
Some of the free materials offered by iQuanta include CAT 2000 – 2024 Previous Papers with solutions, past year CAT Paper in Mock format, Past CAT LRDI Video Solutions, CAT LRDI Daily Practice Sets among others.
