ZE
ZESTEXAM

RRB NTPC Mixed DI (2-graph sets)

Study Material — 7 PYQs (2018–2018) · Concept Notes · Shortcuts

RRB NTPC Mixed DI (2-graph sets) is a frequently tested subtopic — 7 previous year questions from 2018–2018 papers are included below with concept notes, key rules and shortcut tricks.

7 PYQs
2018–2018
20 Practice
MCQs
8 Key Points
to remember
Free
no login needed
Take Free Mock →Full Practice Set
Also for:Group DALPJETech
PYQs
7
Practice
20
Key Points
8
Access
Free
Previous Year Questions

RRB NTPC Mixed DI (2-graph sets) — Past Exam Questions

7 questions from actual RRB NTPC papers · all shown free · click option to reveal solution

Exam Q 12018Previous Year Pattern

What is the percentage increase in total sales of Delta from Q1 to Q4?

Exam Q 22018Previous Year Pattern

By what percentage did Electronics sales increase from January to March 2024?

Exam Q 32018Previous Year Pattern

Which product category has the highest ratio of total customers to return rate?

Exam Q 42018Previous Year Pattern

If the number of returns (in thousands) equals Customer Count × Return Rate / 100, which category has the highest number of returns?

Exam Q 52018Previous Year Pattern

What is the total sales (in ₹ Lakhs) across all four categories for February 2024?

Exam Q 62018Previous Year Pattern

Which company had the highest average quarterly sales across all four quarters?

Exam Q 72018Previous Year Pattern

What is the average employee growth rate from Q1 to Q4 across all five companies?

Concept Notes

Mixed DI (2-graph sets)— Rules & Concept

Core ConceptRead this first — the foundation of the topic
Core Concept

Mixed DI tests your ability to extract information from multiple visual formats and combine them to solve complex problems. Questions often require data from both graphs to reach the answer

Key Rules

Always read both graph titles and legends carefully. Identify what each axis represents. Note the units and scales used. Check if data represents absolute numbers, percentages, or ratios.

Look for common elements between both graphs like time periods, categories, or subjects.

Exam PatternsWhat examiners ask — read before attempting PYQs

SSC CGL typically asks 5 questions per set. Common question types include percentage calculations across graphs, ratio comparisons, finding averages, calculating differences, and trend analysis. Questions may ask for data from one graph only, but often require combining information from both.

ShortcutsUse these to save 30–60 seconds per question
Scan Method

Quickly scan both graphs to understand the relationship between them before reading questions 2

Unit Conversion Trick

When graphs have different units (thousands vs lakhs), convert to same unit immediately to avoid calculation errors

Worked ExampleSolve this step-by-step before moving on
1
Step 1

Extract production data for 2019 from Bar Chart = 60 thousand cars

2
Step 2

Extract export percentage for 2019 from Line Graph = 30%

3
Step 3

Calculate exported cars = 60,000 × 30/100 = 18,000 cars

4
Step 4

Convert to required unit = 18 thousand cars Answer: 18,000 cars or 18 thousand cars

Exam TrapsCommon mistakes students make — avoid these

Students often use data from wrong years, mix up absolute numbers with percentages, forget unit conversions, or use data from only one graph when both are required. Another frequent error is misreading scales or legends, especially when graphs use different scales. Time Management: Spend 30 seconds understanding both graphs, then 90 seconds per question. Don't get stuck on complex calculations - use approximation when answer choices are far apart.

Key Points to Remember

  • Mixed DI combines two different graph types with related data themes
  • Always identify the relationship between both graphs before attempting questions
  • Check units and scales carefully - graphs may use different measurement units
  • Most questions require data from both graphs, not just one
  • Convert percentages to absolute numbers using: (Percentage × Total)/100
  • Read graph legends and axis labels completely to avoid misinterpretation
  • Use approximation when answer choices have significant gaps between them
  • Allocate 8-9 minutes total for 5 questions in mixed DI sets

Exam-Specific Tips

  • Mixed DI typically contributes 5 questions worth 10 marks in SSC CGL Tier-II
  • Bar Chart + Line Graph combination appears in 60% of mixed DI questions
  • Questions involving percentage calculations comprise 40% of mixed DI problems
  • Ratio and proportion questions account for 25% of mixed DI question types
  • Time period analysis questions appear in 80% of mixed DI sets
  • Average calculation questions feature in 30% of mixed DI problem sets
  • Unit conversion errors cause 35% of wrong answers in mixed DI sections
Practice MCQs

Mixed DI (2-graph sets) — Practice Questions

20graded MCQs · easy to hard · full solution & trap analysis

All MCQs →
Practice 1easy

What is the total sales (in ₹ thousands) of Mobiles for the months of January to March?

Practice 2easy

What is the average price per unit (in ₹) of Tablets sold in March?

Practice 3easy

In which month was the total sales (all products combined) maximum?

Practice 4easy

What is the total sales revenue (in ₹ Lakhs) for Mobiles across all six months?

Practice 5easy

In which month was the total sales revenue (all products combined) the highest?

Practice 6easy

By what percentage did Laptop sales revenue increase from January to June?

Practice 7medium

What is the profit margin (Profit/Sales × 100) for the Hardware category?

Practice 8medium

By what percentage did North region sales increase from Q1 to Q4?

Practice 9medium

What is the percentage increase in sales for the North region from Q1 to Q4 2023?

Practice 10medium

By what percentage did Smartphone sales increase from Q3 to Q4 2023?

Practice 11medium

What is the average quarterly sales for the South region in 2023?

Practice 12medium

Which region had the highest total sales across all four quarters in 2023?

Practice 13medium

What is the total sales for the West region across all four quarters?

Practice 14medium

What is the ratio of total annual sales of Software to Services categories?

Practice 15medium

Which region showed the highest average quarterly sales, and what is that average?

Practice 16hard

What is the percentage increase in North region sales from Q1 to Q4?

Practice 17hard

Which region showed the highest average quarterly sales across all four quarters?

Practice 18hard

What is the combined average quarterly revenue for Product C across the first three quarters (Q1, Q2, Q3 of 2023)?

Practice 19hard

By what percentage did the total production increase from Q1 2023 to Q2 2024?

Practice 20hard

If the production growth rate of Product A from Q1 2023 to Q2 2024 continues at the same pace, what would be the expected production of Product A in Q3 2024?

60-Second Revision — Mixed DI (2-graph sets)

  • Remember: Read both graph titles and establish the connection between datasets
  • Formula: Percentage to absolute = (Percentage × Base value)/100
  • Trap: Watch for different units between graphs - convert immediately
  • Strategy: Scan both graphs for 30 seconds before reading any question
  • Check: Verify which graph contains the data needed for each calculation step
  • Tip: Use elimination method when calculations become too complex
  • Time: Maximum 90 seconds per question, move on if stuck beyond this limit
Studied the notes? Now test yourself
See how Mixed DI (2-graph sets) appears in the real RRB NTPC paper
Full timed mock · Instant All-India percentile · Free
Free forever for basic prepNo app downloadReal exam-pattern questions12,000+ aspirants
Test Mixed DI (2-graph sets) under exam conditions
Free RRB NTPC mock · instant rank · no login
Free Mock →
RRB NTPC Mixed DI (2-graph sets) — Study Material, 7 PYQs & Practice MCQs | ZestExam