Here’s a structured approach to solving Data Interpretation and Logical Reasoning (DILR) questions typically found in CAT exams, with a focus on logical frameworks and common patterns. While I cannot reproduce copyrighted exam content verbatim, I’ll explain strategies to tackle similar problems:
Key Strategies for CAT DILR (2019 Slot 1 Style)
Data Interpretation (DI)
图表类型识别:
Bar Graphs, Line Graphs, Pie Charts, or Tables.
Look for trends (e.g., % growth, comparisons).
Step-by-Step Analysis:
Skim the question to identify the ask (e.g., "Which year showed the highest % increase in sales?").
Use answer choices to guide calculations (avoid unnecessary steps).
For multi-variable data (e.g., sales by region and product), create subtotals mentally.
Logical Reasoning
Puzzles & Seating Arrangements:
Map constraints (e.g., "A sits opposite D," "B is not adjacent to E").
Use grids or tables to eliminate impossibilities.
Coded Statements:
Identify logical operators (if-then, unless) and translate them into implications.
Example: "If X > Y, then Z" → If X is true, Z must be true.
Blood Relations:
Draw family trees for complex relationships (e.g., "A’s brother’s wife’s mother").
Common CAT Patterns (2019 Style):
Assumption/Conclusion Questions:
Distinguish between true conclusions (directly supported by data) and inferences (require logical leaps).
Decimal/Percentage Comparisons:
Convert fractions to decimals for quick comparison (e.g., 3/7 ≈ 0.428 vs. 2/5 = 0.4).
Sequence & Series:
Look for arithmetic (add/subtract a constant) or geometric (multiply/divide by a constant) patterns.
Example Problem (Hypothetical DILR Question)
Data: Sales of 3 products (A, B, C) across 4 years (2016–2019).
Table:
| Year | A | B | C |
|------|---|---|---|
| 2016 | 10 | 15 | 20 |
| 2017 | 12 | 18 | 22 |
| 2018 | 14 | 20 | 24 |
| 2019 | 16 | 22 | 26 |
Question: In which year did the ratio of B:C sales exceed A:B sales?
Solution:
Calculate ratios for each year:
B:C = 15:20 = 0.75 (2016) → 22:26 ≈ 0.846 (2019)
A:B = 10:15 ≈ 0.666 (2016) → 16:22 ≈ 0.727 (2019)
Compare ratios:
2019: B:C ≈ 0.846 > A:B ≈ 0.727 → Answer: 2019.
Free Resources to Practice
Previous Year CAT papers (available on official IIM websites or platforms like Vedantu).
Mock Tests: Use platforms like Testbook or Cracku.
YouTube Channels:
Cracku (for detailed video solutions).
IM raipur (for shortcut techniques).
Final Tips
Time Management: Allocate 35–40 minutes for DILR (20 for DI, 20 for LR).
Error Analysis: Review mistakes to avoid repeating them (e.g., misreading % changes).
Practice Under timed conditions to build speed.
Let me know if you’d like further clarification on specific question types!
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