Here’s a structured analysis and solution approach for CAT 2021 Slot 2 Data Interpretation and Logical Reasoning (DILR) questions, based on common patterns observed in CAT exams. While I cannot replicate the exact questions from the exam without the specific dataset, I’ll outline a general strategy and example solutions for typical DILR topics:
1. Data Interpretation (DI)
Common Topics:
Bar Graphs, Line Graphs, Pie Charts
Tabular Data, Caselets, Mixed Graphs
Caselets with Multiple Tables
Strategy:
Skim the question first: Note the number of questions, data type (e.g., percentages, absolute values), and units.
Focus on keywords: "Which company had the highest/lowest...", "Year-over-year growth...", "Ratio of X to Y..."
Answer direct questions first: Avoid time-consuming calculations for questions you can answer with minimal data.
Example Solution (Hypothetical Caselet):
Question: A survey of 100 students across 5 schools (A-E) analyzed their preferences for Math, Physics, and Chemistry.
Data:
School A: 30 Math, 20 Physics, 10 Chemistry
School B: 25 Math, 25 Physics, 15 Chemistry
... (etc.)
Question: Which school had the highest ratio of Physics to Chemistry students?
Solution:
Calculate Physics/Chemistry ratios for each school:
A: 20/10 = 2
B: 25/15 ≈ 1.67
C: 18/12 = 1.5
D: 22/14 ≈ 1.57
E: 24/16 = 1.5
Answer: School A (Ratio = 2).
2. Logical Reasoning (LR)
Common Topics:
Seating Arrangements (Circular, Linear)
Blood Relations
Puzzles (Grouping, Floor/Blood Group)
Statements and Conclusions
Circular Arrangements with Constraints
Strategy:
Draw diagrams for arrangements (e.g., circles, grids).
List constraints and eliminate impossibilities.
Use symbols to represent relationships (e.g., → for "must be after").
Example Solution (Seating Arrangement):
Question: 6 people (A-F) sit around a circular table.
Constraints:
A sits opposite D.
B and C are adjacent.
E is not between F and A.
Question: Who is seated next to A?
Solution:
Draw a circle. Place A and D opposite each other.
B and C must be adjacent (e.g., to A’s left: B-C).
E cannot be between F and A. Place F and E on the remaining seats such that E is not adjacent to A.
Answer: B and C (or F and E, depending on arrangement).
3. Time Management Tips
DI: Allocate 30-40 minutes. Focus on 2-3 questions per graph/table.
LR: Use 25-30 minutes. Prioritize puzzles with clear constraints.
Check answers: Return to skipped questions if time permits.
4. Common Pitfalls to Avoid
Overcomplicating logic: Simplify relationships (e.g., "A is the sister of B" → A-B = Sister).
Misreading units: Ensure percentages, ratios, or years are interpreted correctly.
Ignoring negative constraints: E.g., "X is not adjacent to Y" ≠ "X is adjacent to Y."
5. Practice Resources
Previous CAT papers (2018-2020) for familiarization.
Mock tests from official partners (TCS, Pearson).
YouTube channels: CAT prep experts (e.g., Arun Shukla, Learningroots).
Let me know if you need further clarification on specific questions or types! 🚀
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