Practice Questions
Concept Explanation
DI sufficiency questions test whether table, chart, or graph data—combined with statements—yield a unique answer.
Standard Answer Choices
- A — Statement I alone is sufficient; Statement II alone is not.
- B — Statement II alone is sufficient; Statement I alone is not.
- C — Both together are sufficient, neither alone.
- D — Either statement alone is sufficient.
- E — Neither alone nor together is sufficient.
DI DS Focus
Read units and labels first. Statements may give missing row/column values or totals needed to complete the dataset.
Common Traps in DI Problems
- Ignoring units (Rs. lakh vs Rs. crore).
- Using partial table data as if complete.
- Confusing percentage share with absolute value.
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Q1 Easy
Table: A = 120, B = 180, C = 100. Total is:
Explanation120 + 180 + 100 = 400. -
Q2 Easy
For “Total sales?” — I: A=120, B=180, C=100; II: largest is 180. DS answer?
ExplanationStatement I alone: total = 400. Statement II does not give all values. -
Q3 Easy
Monthly values 60, 90, 120. Average is:
Explanation270/3 = 90. -
Q4 Easy
Category share: 150 out of 600. Percentage is:
Explanation(150/600) × 100 = 25%. -
Q5 Medium
For “Missing value if total 500?” — I: known sum 380; II: missing is largest. DS answer?
ExplanationStatement I: missing = 120. Statement II alone gives no number. -
Q6 Easy
Bars Mon=50, Tue=80, Wed=70. Total is:
Explanation50 + 80 + 70 = 200. -
Q7 Medium
2019 = 200, 2020 = 250. Percentage increase is:
Explanation(50/200) × 100 = 25%.
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Q8 Medium
For “Percentage increase 2019 to 2020?” — I: 2019=200; II: 2020=250. DS answer?
ExplanationNeed both years: (50/200) × 100 = 25%. -
Q9 Easy
Pie chart: sector 90° of 360°. Share is:
Explanation90/360 = 25%. -
Q10 Medium
For “Value of 25% sector if total Rs. 800 lakh?” — I: total Rs. 800 lakh; II: sector is 25%. DS answer?
ExplanationValue = 0.25 × 800 = 200 lakh. Need both total and percent. -
Q11 Easy
Q1=100, Q2=120, Q3=140, Q4=160. Annual total is:
Explanation100+120+140+160 = 520. -
Q12 Easy
For “Average of four quarters?” — I: values 100,120,140,160; II: sum=520. DS answer?
ExplanationI: avg = 130. II: 520/4 = 130. -
Q13 Easy
North=200, South=150 (Rs. lakh). Difference is:
Explanation200 − 150 = 50 lakh. -
Q14 Easy
For “Combined total of two bars?” — I: bar X=75; II: bar Y=125. DS answer?
ExplanationTotal = 200. Need both bar values.
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DS1 Easy
What is the total of three product sales from a table?
Statement IProduct A = 120, B = 180, C = 100.
Statement IIThe highest product sold 180 units.
ExplanationStatement I alone: total = 400. Statement II alone does not give all three values. -
DS2 Medium
What is the percentage increase from 2019 to 2020?
Statement I2019 value = 200.
Statement II2020 value = 250.
ExplanationNeed both values: (50/200) × 100 = 25%.
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DS3 Easy
What is the average of four quarterly values?
Statement IQ1 = 100, Q2 = 120, Q3 = 140, Q4 = 160.
Statement IIThe sum of the four quarters is 520.
ExplanationStatement I: average = 130. Statement II: 520/4 = 130. -
DS4 Medium
What is the missing table entry if the row total is 500?
Statement IFour known entries sum to 380.
Statement IIThe missing entry is the largest in the row.
ExplanationStatement I alone: missing = 120. Statement II alone does not give a number.