Title: CAT 2020 Slot 2 LRDI Solution & Analysis
Content: Detailed Explanation of LRDI Section for CAT 2020 (Slot 2)
Here’s a structured analysis of the Logical Reasoning, Data Interpretation, and Data Analysis (LRDI) section for CAT 2020 (Slot 2), focusing on key patterns, question types, and solutions:
1. Overview of CAT 2020 (Slot 2)
Date: November 29, 2020
Slot 2 Timing: 2:30 PM – 4:30 PM (as per official schedule).
LRDI Section: 60 minutes, 24 questions (varied difficulty level).
2. Key LRDI Trends in CAT 2020 (Slot 2)
Data Interpretation (DI)
Graphs & Tables: 2 sets (one with a bar graph comparing sales of 4 products over 5 years; another with a table of employee performance metrics).
Questions:
Average sales growth rate for Product X (2016–2020).
Employee with the highest % increase in productivity from 2019 to 2020.
Solution Tips:
Calculate growth using (\frac{\text{Final Value} - \text{Initial Value}}{\text{Initial Value}} \times 100).
For tables, focus on relative comparisons and % changes.
Logical Reasoning
Puzzles:
Seating Arrangement (8 people around a circular table with constraints on nationality, food preferences, and age).
Blood Relations (Family tree with marriage, siblings, and generations).
Set Analysis:
Grouping 6 students into teams based on skills (Music, Sports, Coding) with no two students sharing the same skill in a team.
Solution Tips:
Draw diagrams for seating/blood relations.
Use elimination for grouping puzzles (e.g., "A cannot be in the same group as B").
Data Analysis
Caselet + Data Sufficiency:
A company’s profit margins over 5 years with questions on consistency and comparisons.
Data Sufficiency: Is Product Y’s market share > 15%? Use 2 statements (A and B).
Solution Tips:
For caselets, map variables (e.g., Profit = Revenue – Cost) and solve step-by-step.
For DS, check if each statement alone is sufficient or requires both.
3. High-Scoring Strategies for LRDI
Time Management:
Allocate 20 mins to DI, 25 mins to LR, and 15 mins to Data Analysis.
DI Shortcuts:
Use approximation for % calculations (e.g., 17.65% ≈ 17.5%).
Precompute averages/mverages to save time.
Puzzle Hacks:
Tackle linear arrangements first (easier to visualize).
For blood relations, assume family hierarchy (e.g.,祖父母 → 父母 → 子女).
4. Common Pitfalls to Avoid
Overlooking Units: Convert units (e.g., km to miles) if required.
Mishandling Negative Constraints: E.g., "A sits to the left of B" ≠ "B sits to the right of A."
Data Misreading: Double-check axes labels and tables (e.g., sales in Lakh vs. Crore).
5. Sample LRDI Question (DI) & Solution
Question:
The bar graph shows the number of employees in departments X, Y, Z, and W in 2018 and 2019. What is the percentage increase in employees in department Z from 2018 to 2019?
Solution:
2018: 120 employees; 2019: 150 employees.
(\text{Increase} = \frac{150 - 120}{120} \times 100 = 25%).
6. Final Tips for CAT LRDI
Practice Previous Year papers (CAT 2019 LRDI had similar puzzle structures).
Use official mock tests to simulate exam pressure.
Review mistakes in DI calculations and logical deductions.
For specific question-wise solutions or further clarification, share the exact problem statement!
Let me know if you need deeper dives into any section! 🚀
|
