Getting placed in companies like Infosys and LTI Mindtree is a dream for many freshers. But if you look closely at why students fail, it’s usually not because the exam is impossible — it’s because they never studied the pattern properly.

We’ll break down the Infosys System Engineer exam pattern (2025–26) and the LTI Mindtree hiring test structure, straight from the latest official material. Along the way, you’ll also see sample questions, topics to focus on, and preparation tips.

Infosys System Engineer Exam Pattern 2025–26

Infosys has a sectional cutoff system. Even if your overall score is strong, failing one section can eliminate you.

 

Section I: Mathematical / Technical Ability

  • 10 questions, 35 minutes

  • Core areas: Number System, HCF & LCM, Percentages, Profit & Loss, SI & CI, Time-Speed-Distance, Time & Work, Pipes & Cisterns, Probability, Permutations & Combinations.

  • Also includes arrangement puzzles (tabular, circular, linear, square).

Sample Questions

  1. How many code words can be formed with two distinct alphabets followed by two distinct digits?

  2. Two containers have milk-water mixtures in ratios 5:4 and 7:9. In what ratio should they be mixed to form a 1:1 mixture?

  3. Pipe A fills a tank in 10 hrs, Pipe B empties it in 15 hrs. How long to fill a half-empty tank?

Section II: Analytical Thinking

  • 15 questions, 25 minutes

  • Topics: Syllogisms, data sufficiency, logical statements, graph-based DI, puzzles.

Sample Questions

  • “All green are blue. All blue are white.” → Which conclusions follow?

  • Find the wrong number in the series: 15972, 15629, 15840, 15720, 15784, 15757.

  • A round-robin tournament had 21 matches. How many teams participated?

Section III: Puzzle Solving

  • 4 questions, 10 minutes

  • Matrix-based and pattern-based questions.

Example
A 3×3 matrix follows a rule. Find the missing number in the middle row. Options: 169, 181, 197, 205.

Language & Pseudo Code

Although not highlighted in the PPT, Infosys SE exams also include:

  • English grammar (error correction, sentence completion).

  • Writing (short essays).

  • Pseudo code (C/C++ style, testing algorithmic flow).

Watch: Infosys & LTI Exam Pattern Explained

If you prefer a visual breakdown of the hiring process, here’s a detailed video that explains both the Infosys and LTI exam patterns step by step:

Watch the video here

This video is a great companion to the blog, as it helps you understand timing, structure, and key strategies in a live format.

LTI Mindtree Exam Pattern 2025–26

The LTI test is slightly different from Infosys. It’s more balanced between aptitude, coding, and computer science fundamentals.

Structure of Online Test:

  1. English Comprehension – 15 Q, 15 min

  2. Quantitative Ability – 15 Q, 15 min

  3. Logical Reasoning – 15 Q, 15 min

  4. Computer Science – 20 Q, 20 min

  5. Coding – 2 Q, 35 min

  6. Communication Assessment – 20 Q, 20 min

Syllabus Breakdown

Quantitative Ability

  • Number System, Fractions & Decimals, HCF & LCM

  • Percentages, Ratios, Averages

  • Profit & Loss, SI/CI, Time & Work, Time-Speed-Distance

  • Data Interpretation (tables, graphs, pie charts)

  • Probability, Permutations & Combinations

  • Mensuration (2D, 3D areas, volumes)

English Comprehension

  • Vocabulary: Synonyms, Antonyms, Idioms, Cloze test

  • Grammar: Error identification, subject-verb agreement, tenses

  • Reading comprehension (fact-based & inference-based)

  • Sentence completion & correction

Logical Reasoning

  • Syllogisms, statements & assumptions, conclusions

  • Puzzles (linear, circular, blood relations)

  • Data sufficiency

  • Number/letter/figure series

Computer Science

  • Programming (C, C++, Java, OOPS concepts)

  • Data Structures & Algorithms

  • DBMS (SQL, Normalization, Transactions)

  • OS (Scheduling, Memory, Deadlocks)

  • Networks (OSI/TCP, IP addressing, Routing)

  • Software Engineering, Compiler Design, TOC basics

  • Web Technologies, Cloud basics

Coding

  • Languages allowed: C, C++, Java, Python

  • Focus: Problem-solving, DS & Algo (arrays, strings, hashing), time/space complexity, test case handling

Communication Assessment

  • Grammar, reading comprehension, sentence correction, vocabulary in context

  • Sometimes includes speaking/listening (fluency, pronunciation)

Preparation Strategy

  • For Infosys: Prioritize aptitude speed and reasoning depth. Focus on puzzles, arrangement-based questions, and probability.

  • For LTI: Cover breadth — aptitude basics + computer science theory + strong coding practice.

  • Mock Tests: Both companies use adaptive or cutoff-based systems. Practicing under real exam conditions is key.

Conclusion

Infosys and LTI remain two of the biggest opportunities for fresh graduates in 2025–26. While Infosys leans more on aptitude + reasoning + cutoff clearing, LTI tests a broader mix of aptitude + computer science + coding.