DILR 2024 Slot 2: Data Interpretation and Logical Reasoning Solutions & Strategies
Here’s a structured guide to tackling the DILR (Data Interpretation and Logical Reasoning) section in Slot 2 of the 2024 exam, focusing on common question patterns, solved examples, and key strategies for optimal performance.
1. Section Overview
Pattern: Typically includes 2 sets (each with 5 questions) over 40 minutes.
Key Topics:
Data Interpretation: Tables, charts (bar, pie, line), caselets, and mixed graphs.
Logical Reasoning: Seating arrangements, blood relations, logical puzzles, inequalities, and coding-decoding.
2. Data Interpretation (DI) Solutions
Example 1: Table-Based Data Interpretation
Question:
A table shows monthly sales (in Lakh) of two products (A and B) over 6 months.
Find the percentage increase in sales of Product B from March to June.
Month
Product A
Product B
Jan
40
30
Feb
45
35
Mar
50
40
Apr
55
45
May
60
50
Jun
65
55
Solution:
March sales of B: 40 lakh
June sales of B: 55 lakh
Increase: (55 - 40 = 15%\ \text{of}\ 40 = \frac{15}{40} \times 100 = 37.5%).
Answer: 37.5%.
Example 2: Caselet DI
Question:
A survey of 200 students ranked 5 subjects (Math, Science, English, Hindi, Social) as their favorite. The pie chart shows percentages.
If 10 students changed their preference from Hindi to Math, what is the new percentage for Math?
Chart Data:
Math: 25%
Hindi: 15%
Solution:
Original Math: (200 \times 25% = 50) students.
Hindi: (200 \times 15% = 30) students.
After shift: Math becomes (50 + 10 = 60), Hindi (30 - 10 = 20).
New Math%: (\frac{60}{200} \times 100 = 30%).
Answer: 30%.
3. Logical Reasoning (LR) Solutions
Example 1: Seating Arrangement
Question:
8 people (A-P) sit around a circular table. A sits opposite E. B is to the immediate left of D. If C is next to E, who sits between B and F?
Solution:
Draw the circle. Place A and E opposite each other.
B-D pair (clockwise).
E’s neighbors: C and ?.
Final arrangement:
A – ? – B – D – ? – E – C – ?
Answer: F (depending on remaining gaps).
Example 2: Blood Relations
Question:
If X is the sister of Y, and Y is the father of Z, how is X related to Z?
Solution:
X is Y’s sister → X is Z’s aunt (since Y is Z’s father).
Answer: Aunt.
4. Key Strategies
DI:
Skim charts for units, time frames, and comparisons.
Use approximations (e.g., 1.6 ≈ 1.5 for quick % calculations).
Practice Missing Data’ questions using algebraic equations.
LR:
Seating Arrangements: Draw diagrams and mark fixed positions first.
Inequalities: Use symbols (≥, ≤) and process of elimination.
Puzzles: List constraints and create grids for possible assignments.
5. Time Management Tips
DI: Allocate 20 mins per set (15 mins for interpretation, 5 for answers).
LR: Spend 25 mins on puzzles and 10 mins on seating/blood relations.
Review: Recheck % calculations and logical contradictions.
6. Sample LR Puzzle
Question:
6 people (P-T) attend a conference. Each person has a different expertise (Engineer, Doctor, etc.).
P and Q cannot be engineers.
R and S are doctors.
T is adjacent to S.
Who is the engineer?
Solution:
Doctors: R, S.
Engineer ≠ P, Q → Engineer is T (if T is adjacent to S, possible).
Answer: T.
Final Tips: Practice previous years’ Slot 2 papers for熟悉题型，and focus on speed and accuracy. Use answer keys to identify weak areas.
Need specific question help? Share the problem statement!
Let me know if you need further clarification or more examples! 🚀
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