For most freshers, the first real hurdle in IT hiring is not the interview. It is the online aptitude test. Thousands of applicants take it, and the cut-off decides who gets a call. Many capable candidates never reach the interview simply because they did not prepare for the test format.
The good news: aptitude tests reward practice more than talent. The topics repeat, the question styles repeat, and a few shortcuts save minutes. This guide explains the usual structure, gives worked examples for the most common topics, and lays out a 30-day plan you can follow alongside college or a job.
What a typical IT aptitude test contains
| Section | Common topics | What it checks |
|---|---|---|
| Quantitative aptitude | Percentages, profit and loss, ratio and proportion, averages, time and work, time-speed-distance, simple and compound interest, number system, permutations and combinations, probability | Speed and accuracy with numbers |
| Logical reasoning | Number and letter series, coding-decoding, blood relations, seating arrangement, syllogisms, data sufficiency, puzzles, directions | Structured thinking |
| Verbal ability | Reading comprehension, sentence correction, fill in the blanks, para jumbles, synonyms and antonyms | Business English for client communication |
| Coding (for developer tracks) | One to three problems: strings, arrays, basic algorithms | Programming fundamentals |
| Others (some companies) | Written communication or email writing, computer fundamentals, psychometric questions | Communication and role fit |
Many large IT employers run their own national tests or use assessment partners. Patterns, time limits and negative marking differ, so check the official careers page or the email invitation before you prepare.
Worked shortcuts for the most common topics
Percentages: successive change
A price rises 20% and then falls 20%. Net change = a + b + (a × b ÷ 100) = 20 − 20 + (20 × −20 ÷ 100) = −4%. So it ends 4% lower, not unchanged.
Profit and loss
Cost 400, sold at 500. Profit % = profit ÷ cost × 100 = 100 ÷ 400 × 100 = 25%. Always divide by cost price unless the question says otherwise.
Time and work
A finishes a job in 10 days, B in 15 days. In one day they do 1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6 of the job, so together they take 6 days. Shortcut for two people: (a × b) ÷ (a + b) = 150 ÷ 25 = 6.
Time, speed and distance
Going at 40 km/h and returning at 60 km/h over the same distance, the average speed is 2 × 40 × 60 ÷ (40 + 60) = 48 km/h, not 50. For equal distances, use 2xy ÷ (x + y).
Averages
The average of 5 numbers is 20. One number is removed and the average becomes 18. Removed number = (5 × 20) − (4 × 18) = 100 − 72 = 28.
Ratio
Divide 840 in the ratio 3 : 4. Total parts 7, one part = 120, so 360 and 480.
Simple vs compound interest
On 10,000 at 10% for 2 years, simple interest = 2,000; compound interest (annual) = 10,000 × 1.1 × 1.1 − 10,000 = 2,100. The difference for 2 years = P × (r/100)² = 10,000 × 0.01 = 100.
Number series
2, 6, 12, 20, 30, ? The differences are 4, 6, 8, 10, so the next difference is 12 and the answer is 42 (also n × (n+1)).
Coding-decoding
If CAT is written as DBU, each letter moves one step forward, so DOG becomes EPH.
Syllogisms
All laptops are devices. Some devices are phones. Conclusion "Some laptops are phones" does not follow; draw circles (Venn diagrams) instead of trusting common sense.
The 30-day preparation plan
| Days | Focus | Daily target |
|---|---|---|
| 1–3 | Diagnostic test; list weak topics; learn tables up to 20, squares up to 30, fraction–percentage conversions | 1 full mock + 1 hour basics |
| 4–10 | Quantitative: percentages, profit and loss, ratio, averages, time and work, TSD, interest | 40 questions a day, timed |
| 11–16 | Logical reasoning: series, coding-decoding, blood relations, seating, syllogisms, puzzles | 40 questions a day |
| 17–21 | Verbal: reading comprehension, grammar rules, sentence correction, para jumbles | 2 passages + 30 questions a day |
| 22–25 | Coding section (if applicable) and weak topics | 2 coding problems + 30 mixed questions |
| 26–30 | Full-length timed mocks; analyse every mistake | 1 mock a day + review |
Test-day strategy
- Attempt easy questions first. Every question usually carries the same marks.
- Skip and return. If a question takes more than about 90 seconds, mark it and move on.
- Check for negative marking in the instructions; if there is none, never leave a question blank.
- Watch sectional timers. Some tests lock a section when its time ends.
Online proctored test rules
- Use a laptop or desktop with a working webcam and microphone, and a stable internet connection plus a backup (mobile hotspot).
- Sit alone in a quiet, well-lit room; keep your ID card ready.
- Do not switch tabs, use a second screen or keep a phone nearby. Proctoring software flags these and can disqualify you.
- Run the system compatibility check sent by the company a day before.
After the aptitude test
Clearing the test usually leads to a technical round and an HR round. Start preparing for those while you wait for results: what happens in a technical round and the HR round in IT interviews.
Frequently Asked Questions
What topics come in aptitude tests for IT companies?
Quantitative aptitude (percentages, profit and loss, ratio, averages, time and work, speed and distance, interest), logical reasoning (series, coding-decoding, seating, syllogisms, puzzles), verbal ability and often a coding section.
How many days are needed to prepare for an aptitude test?
About 30 days of focused daily practice is enough for most freshers, especially if the last week is spent on full-length timed mock tests.
Is there negative marking in IT aptitude tests?
It depends on the company and the test. Always read the instructions; if there is no negative marking, attempt every question.
How can I improve my speed in aptitude?
Learn tables, squares and fraction–percentage conversions, use shortcuts for common topics, practise under time limits and review every mistake after each mock.
Can I use a calculator in the aptitude test?
Usually only if the test provides an on-screen calculator. Assume you cannot and practise mental calculation.
What happens if I switch tabs in an online proctored test?
Proctoring software usually records it as suspicious activity, and repeated violations can lead to disqualification.