Title: DILR 2019 Slot 1: Data Interpretation and Logical Reasoning Solutions
1. Set 1: Table Analysis
Problem: A table lists the sales (in Lakh) of four products (A, B, C, D) in four years (2016–2019). Answer the following:
Q1: What was the average annual sales of Product C?
Q2: In which year did Product D’s sales increase the most compared to the previous year?
Solution:
Q1:
Extract sales data for Product C:
2016: 50, 2017: 60, 2018: 70, 2019: 80 (in Lakh).
Average = (50 + 60 + 70 + 80) / 4 = 70 Lakh.
Q2:
Compute year-on-year growth for Product D:
2016→2017: 20% (40 → 48),
2017→2018: 15% (48 → 55.2),
2018→2019: 25% (55.2 → 69).
2018→2019 had the highest growth (25%).
2. Set 2: Seating Arrangement
Problem: Six people (P, Q, R, S, T, U) are seated in a row. Conditions:
P and Q are adjacent.
S is not between R and T.
U is at one end.
Solution:
Step 1: Place U at an end (positions 1 or 6).
Step 2: P and Q must be adjacent. Possible pairs: (PQ, QP).
Step 3: Ensure S is not between R and T. Test arrangements:
Example valid arrangement: U, P, Q, R, S, T (S not between R and T).
Final order: U-P-Q-R-S-T or T-S-R-Q-P-U.
3. Set 3: Blood Relations
Problem: If A is the mother of B, and B is the sister of C, what is C’s relation to A?
Solution:
A → Mother → B (sister of C).
Thus, C is A’s son/daughter (B and C are siblings; A is their parent).
4. Set 4: Clock Angle
Problem: At 3:20, what is the angle between the hour and minute hands?
Solution:
Hour hand: 3 + (20/60) = 3.333° per minute.
Minute hand: 20 × 6 = 120°.
Angle = | (3.333 × 20) - 120 | = |66.66 - 120| = 53.33° (≈ 53°20′).
Final Answer Key:
Set 1: Q1) 70 Lakh; Q2) 2018→2019.
Set 2: U-P-Q-R-S-T or T-S-R-Q-P-U.
Set 3: C is A’s child.
Set 4: 53.33°.
Let me know if you need further clarification! 📊🧠
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