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DILR

Logical Reasoning

Set-based reasoning: arrangements, routes, games & tournaments, binary logic. Usually 4–5 questions per set.

Key Concepts

1

Linear / circular arrangements: list all constraints, use elimination to fix positions

2

Floor / grid puzzles: use a table — rows for floors/seats, columns for attributes

3

Binary logic (truth-teller/liar): assume each person is truth-teller, check for contradictions

4

Tournament grids: create a match results matrix and fill from given clues

Strategy Tips

Draw a fresh diagram for each question in a set — don't re-use a dirty one

If a clue seems contradictory, you've made a wrong assumption earlier — trace back

In CAT DILR, 1–2 sets are easy, 1–2 are hard. Identify and attempt easy sets first

CAT PYQ Spotlight

Actual CAT questions on this topic

CAT 2021 · Slot 1

How many points did Q finish with?

CAT 2021 · Slot 1

Which team did S defeat?

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More Logical Reasoning topics
Arrangements & RankingTeam Formation & SelectionPuzzle TestBinary Logic (Truth-teller / Liar)