AMCAT Automata Fix is the debugging module of the AMCAT exam — candidates receive buggy pre-written code and must fix it within 35–40 minutes. This guide covers everything: bug types, language selection, time strategy, and what companies require it.
AMCAT Automata Fix is the dedicated coding module within the AMCAT exam that tests a candidate's ability to identify and correct bugs in pre-written code. Unlike a traditional coding round where you write a solution from scratch, Automata Fix presents you with a working algorithm that contains one or more deliberate errors — your job is to find and fix them. Practice with the free Aspiring Minds Computer Adaptive practice test on PracticeTestGeeks (250+ questions with answer explanations).
This module is a core differentiator in the AMCAT assessment for software engineering recruitment. Recruiters at major Indian IT companies use Automata Fix scores to filter candidates who understand code behavior at a deeper level — not just those who can memorize syntax.
You are given a problem statement, expected inputs/outputs, and a code snippet containing the bug. You must edit the code until it passes all test cases. The module is adaptive: difficulty adjusts based on your performance.
The Automata Fix module is mandatory or strongly weighted for software engineering and developer roles at companies that use the AMCAT platform for campus and lateral hiring. These include:
If you are targeting a non-coding business or functional role, you will likely not face this module. But for any profile tagged as developer, engineer, or technical analyst, Automata Fix is almost certain to appear. Check the AMCAT score guide to understand how individual module scores impact your overall profile visibility to recruiters.
Facts verified Oct 19, 2026 against SHL (India) Private Limited / Aspiring Minds. Dates that have passed are removed automatically.
| Item | Detail | Official source |
|---|---|---|
| Number of questions | No negative marking | SHL (India) Private Limited / Aspiring Minds |
| Number of questions (AMCAT Personality Inventory (AMPI)) | 90 questions | SHL (India) Private Limited / Aspiring Minds |
| Number of questions (English) | 18 questions | SHL (India) Private Limited / Aspiring Minds |
| Number of questions (Quantitative Ability Tech) | 16 questions | SHL (India) Private Limited / Aspiring Minds |
| Time limit (AMCAT Personality Inventory (AMPI)) | 20 minutes | SHL (India) Private Limited / Aspiring Minds |
| Passing score | Employer-specific section criteria | SHL (India) Private Limited / Aspiring Minds |
| Exam fee | INR 1,100 advertised by Help Center; conflicting FAQ price | SHL (India) Private Limited / Aspiring Minds |
| Retake fee | Payment required again; separate retake amount unconfirmed | SHL (India) Private Limited / Aspiring Minds |
| Retake policy | Retake after 45 days | SHL (India) Private Limited / Aspiring Minds |
| Validity | Until the AMCAT subscription expires | SHL (India) Private Limited / Aspiring Minds |
| Renewal | Subscription can be extended without retesting | SHL (India) Private Limited / Aspiring Minds |
| Delivery | At-home testing advertised; FAQ conflicts | SHL (India) Private Limited / Aspiring Minds |
| Eligibility | No general eligibility restriction | SHL (India) Private Limited / Aspiring Minds |
| Score release | Typically 6–7 working days | SHL (India) Private Limited / Aspiring Minds |
| Testing window | Regular scheduled sessions; availability depends on booking | SHL (India) Private Limited / Aspiring Minds |
Facts verified Oct 19, 2026 against SHL (India) Private Limited / Aspiring Minds. Dates that have passed are removed automatically.
Interactive Aspiring Minds Computer Adaptive Test resources on PracticeTestGeeks, free to start:
Pick one language and stick with it throughout your preparation. Python is recommended for beginners because its syntax is readable and you can mentally trace execution quickly. C++ is preferred if you are targeting competitive programming roles since the test cases are stricter. Java is a solid middle ground for TCS Digital and Infosys-track candidates.
Review the basics of your chosen language using the AMCAT computer skills module overview — many bug types in Automata Fix overlap with concepts tested there.
The single most important skill for Automata Fix is the ability to mentally execute code line by line with a given input. This is called dry-running. Practice this with at least 20–30 programs before your exam. Start with programs that have obvious bugs, then work up to subtle logic errors.
Most Automata Fix problems involve one of these algorithm categories:
Study each pattern and familiarize yourself with how bugs typically appear. Use the AMCAT logical reasoning section practice to strengthen the analytical thinking that underlies debugging.
With 35–40 minutes for 1–2 problems, time is not the primary constraint — accuracy is. Follow this sequence:
Candidates who rewrite entire functions waste time and often introduce new bugs. The fix is almost always 1–3 lines. Keep changes minimal.
Many Automata Fix programs test numerical algorithms. Strengthening your AMCAT quantitative aptitude skills will help you verify expected outputs quickly during the exam — particularly for programs involving GCD, prime checks, factorial, or series computation.
For a fuller set of questions on this topic, see our concentrix amcat test practice resource.
For a fuller set of questions on this topic, see our amcat test practice resource.
For more details, see our amcat practice test guide.| Pros | Cons |
|---|---|
| Validates your knowledge and skills objectively | Study materials can be expensive |
| Increases job market competitiveness | Exam anxiety can affect performance |
| Provides structured learning goals | Requires dedicated preparation time |
| Networking opportunities with other certified professionals | Retake fees apply if you don't pass |
Try these questions from our free Aspiring Minds Computer Adaptive Test practice tests. The correct answer and an explanation follow each question.
A and B together can complete a project in 12 days. A alone can complete it in 18 days. In how many days can B alone complete the project?
Answer: C. 36 days
B's rate = (A+B's rate) − A's rate = 1/12 − 1/18 = 3/36 − 2/36 = 1/36. So B alone takes 36 days.
A can complete a piece of work in 15 days and B can complete the same work in 20 days. They start working together, but A leaves after 4 days. In how many days will B complete the remaining work?
Answer: C. 28/3 days
A's one day's work is 1/15. B's one day's work is 1/20. Their combined work for one day is (1/15) + (1/20) = (4+3)/60 = 7/60. In 4 days, they complete 4 * (7/60) = 28/60 = 7/15 of the work. The remaining work is 1 - (7/15) = 8/15. B alone will complete the remaining work in (8/15) / (1/20) = (8/15) * 20 = 32/3 = 10 and 2/3 days. The question asks for the remaining days, which is (8/15) of the work divided by B's rate (1/20), which is (8/15) * 20 = 160/15 = 32/3 days.
If 8 workers can complete a task in 15 days, how many days will 12 workers take to complete the same task?
Answer: A. 10 days
Total work = 8×15 = 120 worker-days. With 12 workers: 120/12 = 10 days.
If 3 men can complete a job in 12 days, how many days will 4 men take to complete the same job?
Answer: C. 9 days
Total work = 3 × 12 = 36 man-days; with 4 men: 36/4 = 9 days.
Take the full Aspiring Minds Computer Adaptive Test practice test
For more details, see our AMCAT Logical Reasoning: Complete Guide to All Question Types, Time Strategy & Hiring Cutoffs guide. For more details, see our AMCAT Computer Skills Section — Complete Guide 2026 guide. For more details, see our AMCAT Score — What Your Score Means and Company Cutoffs 2026 guide. For more details, see our AMCAT Registration Guide 2026 — How to Register and Book Your Test guide. For more details, see our what is amcat test guide.