Data Interpretation & Reasoning
Every OA includes DI sets and 8–10 reasoning questions. Ten full caselets with clean charts, four questions each, plus 30 syllogism/seating/blood-relation/input-output drills — with an auto-saving scratchpad.
Practice speed calculations and approximation before your OA.
Campus placement summary 2024
table| Branch | Registered | Appeared | Selected |
|---|---|---|---|
| CSE | 240 | 228 | 182 |
| ECE | 200 | 190 | 124 |
| MECH | 160 | 148 | 93 |
| CIVIL | 120 | 112 | 54 |
Registered vs appeared vs selected across four branches of an engineering college.
Q1What percentage of appeared students were selected in CSE (nearest)?
Q2The ratio of selected students ECE : MECH is:
Q3The overall selection percentage (all branches, of appeared) is closest to:
Q4How many registered students were NOT selected across all branches?
Monthly production of a pump factory
barBar lengths are proportional; read exact numbers from the table below.
| Month | Production (000s) |
|---|---|
| Jan | 42 |
| Feb | 48 |
| Mar | 45 |
| Apr | 54 |
| May | 60 |
| Jun | 51 |
Units produced (in thousands) from January to June.
Q1Percentage increase in production from February to April?
Q2Average production of the first three months (000s)?
Q3June's production compared to May changed by:
Q4Ratio of total H1 production to May's production:
Smartphone market share
pie- Brand A — 28%
- Brand B — 24%
- Brand C — 20%
- Brand D — 16%
- Brand E — 12%
| Brand | Share | Revenue (₹ Cr) |
|---|---|---|
| Brand A | 28% | 672 |
| Brand B | 24% | 576 |
| Brand C | 20% | 480 |
| Brand D | 16% | 384 |
| Brand E | 12% | 288 |
Share of five brands in a ₹2,400 crore quarterly market.
Q1Brand A's quarterly revenue is:
Q2Ratio of (A + B) combined share to (C + D) combined share:
Q3If Brand E grows 25% next quarter while the market stays ₹2,400 Cr, its revenue gain is:
Q4The difference between Brand A's and Brand C's revenue is:
Employees by department, 2023 vs 2024
dual-pie- Engineering — 50%
- Operations — 25%
- Sales — 15%
- HR — 10%
| Department | 2023 share (800) | 2024 share (1000) | 2023 count | 2024 count |
|---|---|---|---|---|
| Engineering | 50% | 45% | 400 | 450 |
| Operations | 25% | 25% | 200 | 250 |
| Sales | 15% | 18% | 120 | 180 |
| HR | 10% | 12% | 80 | 120 |
Department-wise share of headcount; total employees were 800 in 2023 and 1,000 in 2024.
Q1The increase in the number of engineers from 2023 to 2024:
Q2Percentage change in Operations headcount:
Q3Ratio of Sales headcount 2023 : 2024:
Q4HR headcount grew by what percentage?
Daily website traffic (weekdays)
lineBar lengths are proportional; read exact numbers from the table below.
| Day | Visitors (000s) |
|---|---|
| Mon | 20 |
| Tue | 26 |
| Wed | 24 |
| Thu | 32 |
| Fri | 40 |
Visitors in thousands per day, Monday to Friday.
Q1Percentage increase from Monday to Friday:
Q2The median daily traffic (000s) is:
Q3Approximate average daily traffic (000s):
Q4Ratio of Thursday to Monday traffic:
Two-wheeler sales vs target
table| Quarter | Target | Sales |
|---|---|---|
| Q1 | 90 | 84 |
| Q2 | 100 | 96 |
| Q3 | 110 | 108 |
| Q4 | 125 | 120 |
Quarterly sales against targets, in thousands of units.
Q1Which quarter achieved the highest percentage of its target?
Q2Total shortfall against target for the year (000s):
Q3Q1's shortfall as a percentage of its target:
Q4Average quarterly sales (000s):
Student's score card (out of 100)
radarBar lengths are proportional; read exact numbers from the table below.
| Subject | Marks |
|---|---|
| Maths | 80 |
| Physics | 70 |
| Chemistry | 60 |
| English | 85 |
| Computer Science | 90 |
Marks of a student across five subjects.
Q1The student's average score is:
Q2Ratio of the highest to the lowest score:
Q3By how many marks must the Maths score rise for the average to become 80?
Q4The English score is what percentage above the class average of 75?
Quality control: IR sensor batches
table| Batch | Produced | Defective | Defect rate |
|---|---|---|---|
| B1 | 5,000 | 120 | 2.4% |
| B2 | 6,000 | 150 | 2.5% |
| B3 | 4,500 | 81 | 1.8% |
| B4 | 5,500 | 110 | 2.0% |
Four production batches with units produced and defective units.
Q1Which batch has the lowest defect rate?
Q2The overall defect rate across all batches (nearest):
Q3How many batches have a defect rate above the overall rate (2.2%)?
Q4If B2's defects are cut by 30 units, the new overall rate is closest to:
Household monthly budget
pie- Food — 30%
- Rent — 25%
- Savings — 20%
- Education — 15%
- Travel — 10%
| Head | Share | Amount (₹) |
|---|---|---|
| Food | 30% | 18,000 |
| Rent | 25% | 15,000 |
| Savings | 20% | 12,000 |
| Education | 15% | 9,000 |
| Travel | 10% | 6,000 |
Split of a ₹60,000 monthly income.
Q1Monthly spend on food:
Q2Ratio of Rent to Education spend:
Q3If income rises 10% and the savings share is unchanged, savings become:
Q4Travel spend is what percentage of NON-savings spending?
Solar vs wind generation
dual-barBar lengths are proportional; read exact numbers from the table below.
| Month | Solar | Wind |
|---|---|---|
| Apr | 40 | 30 |
| May | 46 | 30 |
| Jun | 48 | 36 |
| Jul | 26 | 44 |
Energy generated (million units) April to July.
Q1Total solar generation for April–June (MU):
Q2In which month did wind generation first exceed solar?
Q3Percentage fall in solar from June to July (nearest):
Q4Ratio of total wind to total solar across all four months: