Infosys Aptitude Test 2026: Solved Questions for All 4 Sections

The Infosys online aptitude test gates all three hiring tracks and covers four sections: mathematical ability, reasoning, verbal, and pseudo-code.

The test structure is the same entry point whether you are targeting the System Engineer, Specialist Programmer, or Power Programmer track. The tracks diverge in CTC and selection criteria after you clear this gate. Knowing the section map, question counts, and time pressure per section is where preparation actually begins.

How the Infosys Online Test Is Structured

The online test uses a shared aptitude block for all three tracks. The pseudo-code section is added for SP and PP candidates.

Section	Typical question count	Time limit	Tracks
Mathematical ability	15	25 minutes	SE, SP, PP
Reasoning ability	10–15	25 minutes	SE, SP, PP
Verbal ability	15–20	20–25 minutes	SE, SP, PP
Pseudo-code	5–10	10–20 minutes	SP, PP only

The three hiring tracks differ in starting CTC and what comes after the aptitude gate.

Track	Starting CTC	Requirement
System Engineer (SE)	₹3.6 LPA	Standard aptitude and technical interview
Specialist Programmer (SP)	₹6.5 LPA	Stronger DSA coding section; InfyTQ certification holders preferred
Power Programmer (PP)	₹9.5 LPA	HackWithInfy top performers; 7.5+ CGPA; InfyTQ required

Clearing the aptitude test is necessary but not sufficient. The technical interview that follows is where track differentiation becomes visible. The aptitude section is the filter at the front.

Mathematical Ability: Topics and Worked Solutions

The mathematical ability section runs 15 questions in 25 minutes. Eight topic types appear; the first five carry the highest question share.

Topic	Frequency
Percentages and profit/loss	High
Time, speed, and distance	High
Averages	Medium
Simple and compound interest	Medium
Ratios and proportions	Medium
Number series	Medium
Pipes and cisterns	Low
Mixtures and alligation	Low

Number series questions appear in both the mathematical ability section and the reasoning block depending on the test version. The Infosys number series guide covers all six pattern types in depth. This section treats number series at summary level and works through the remaining topic types with verified solutions.

Percentages and Profit/Loss

Key formulas:

• Percentage = (Value / Total) × 100
• Profit = Selling Price (SP) minus Cost Price (CP)
• Loss = CP minus SP
• Profit percentage = (Profit / CP) × 100

Worked examples:

• Q1. A student scored 420 marks out of 600 in an exam. What is the percentage score?

  • Percentage = (420 / 600) × 100 = 70%
  • Answer: 70%

• Q2. A shopkeeper buys a mobile for ₹8,000 and sells it for ₹10,000. What is the profit percentage?

  • Profit = ₹10,000 minus ₹8,000 = ₹2,000
  • Profit % = (2,000 / 8,000) × 100 = 25%
  • Answer: 25%

• Q3. A man spends 30% of his salary on rent and 40% on groceries, saving the remaining ₹12,000. What is his total salary?

  • Savings = 100% minus 30% minus 40% = 30% of salary
  • 30% of salary = ₹12,000, so total salary = ₹12,000 / 0.30 = ₹40,000
  • Answer: ₹40,000

Time, Speed, and Distance

Core relation: Speed = Distance / Time. To convert km/h to m/s, multiply by 5/18.

Worked examples:

• Q4. A train travels at 60 km/h. How long will it take to cover 240 km?

  • Time = 240 / 60 = 4 hours
  • Answer: 4 hours

• Q5. Two trains of length 120 m and 80 m travel in opposite directions at 40 km/h and 50 km/h. How many seconds do they take to cross each other?

  • Relative speed = 40 + 50 = 90 km/h = 90 × (5/18) = 25 m/s
  • Total length = 120 + 80 = 200 m
  • Time = 200 / 25 = 8 seconds
  • Answer: 8 seconds

Averages

Formula: Average = Sum of all values / Count of values.

Worked example:

• Q6. The average of five numbers is 36. One number is removed and the new average becomes 34. What was the removed number?
  • Total sum of 5 numbers = 5 × 36 = 180
  • Total sum after removal = 4 × 34 = 136
  • Removed number = 180 minus 136 = 44
  • Answer: 44

Simple and Compound Interest

Formulas:

• Simple Interest (SI) = P × R × T / 100
• Compound Interest (CI) = P × (1 + R/100)^n minus P

Worked examples:

• Q7. Find the simple interest on ₹5,000 at 10% per annum for 3 years.

  • SI = (5,000 × 10 × 3) / 100 = ₹1,500
  • Answer: ₹1,500

• Q8. Find the compound interest on ₹5,000 at 10% per annum for 2 years.

  • CI = 5,000 × (1 + 10/100)^2 minus 5,000
  • = 5,000 × 1.21 minus 5,000
  • = 6,050 minus 5,000 = ₹1,050
  • Answer: ₹1,050

Ratios and Proportions

Worked example:

• Q9. The ratio of A’s age to B’s age is 3:5. If A is 18 years old, how old is B?
  • Let A = 3x and B = 5x. Then 3x = 18, so x = 6.
  • B = 5 × 6 = 30 years
  • Answer: 30 years

Pipes and Cisterns

Framework: if a pipe fills a tank in x hours, its rate is 1/x of the tank per hour. If a pipe empties in y hours, its draining rate is 1/y per hour (subtract from the fill rate).

Worked example:

• Q10. Pipe A fills a tank in 6 hours. Pipe B empties it in 12 hours. If both are open simultaneously, how long does it take to fill the tank?
  • Net fill rate = 1/6 minus 1/12 = 2/12 minus 1/12 = 1/12 per hour
  • Time to fill = 12 hours
  • Answer: 12 hours

Number Series (Summary)

Number series questions ask you to identify the pattern and find the missing term. The Infosys number series guide covers all six pattern types with 12 solved examples. Two representative examples:

• Q11. Find the missing number: 2, 6, 12, 20, 30, ?

  • Differences between terms: 4, 6, 8, 10, 12. Each difference increases by 2.
  • Next term = 30 + 12 = 42
  • Answer: 42

• Q12. Find the missing number: 3, 9, 27, 81, ?

  • Pattern: each term multiplies by 3 (geometric series with ratio 3).
  • Next term = 81 × 3 = 243
  • Answer: 243

Reasoning Ability: What to Expect

The reasoning ability section draws from five category types: syllogisms, blood relations, coding-decoding, statement-conclusion, and data sufficiency. Number series also appears in some test versions under this section.

The Infosys logical reasoning guide covers all five categories with multiple worked examples per type and a per-topic timing strategy. Two representative questions below.

Syllogisms

• Q1. Statements: (1) All cats are animals. (2) All animals are living things. Which conclusions follow? (I) All cats are living things. (II) Some living things are cats.
  • Draw Venn circles: cats inside animals inside living things.
  • Conclusion I follows directly. Conclusion II also follows since cats are a subset of living things.
  • Answer: Both I and II follow.

Coding-Decoding

• Q2. If APPLE is coded as BQQMF, what is the code for MANGO?
  • Rule: each letter shifts forward by 1 position (A to B, P to Q, P to Q, L to M, E to F).
  • MANGO: M to N, A to B, N to O, G to H, O to P.
  • Answer: NBOHP

For blood relations, statement-conclusion, and data sufficiency question types, the Infosys logical reasoning guide covers each with two solved examples and a mechanical solving method.

Verbal Ability: Reading Comprehension and Grammar

The verbal ability section tests four competency areas: reading comprehension passages, sentence completion, grammar and error spotting, and vocabulary in context. Reading comprehension passages typically account for roughly half the questions.

Reading Comprehension

RC questions present a passage of 150 to 300 words, followed by three to five questions. Most RC questions in the Infosys test are direct-reference questions: the answer is in the passage text, not inferred from outside knowledge.

Approach: read the questions first, then scan the passage for the relevant paragraph. Answer extraction is faster than full-passage reading when time is limited.

Sentence Completion

• Q1. “The committee decided to _______ the meeting until further notice.”

  • Options: (A) adjourn (B) postpone (C) cancel (D) suspend
  • “Adjourn” means to suspend to a later time with the expectation of resuming. The formal committee context favours this over “postpone.”
  • Answer: (A) adjourn

• Q2. “The scientist’s discovery was _______ because it overturned decades of accepted theory.”

  • Options: (A) routine (B) unremarkable (C) groundbreaking (D) predictable
  • Only (C) matches the idea of overturning established theory.
  • Answer: (C) groundbreaking

Error Spotting

• Q3. Identify the error: “Neither of the two candidates were able to answer the question correctly.”

  • “Neither” takes a singular verb. The correct form is “was,” not “were.”
  • Answer: ‘were’ should be ‘was’

• Q4. Identify the error: “The data shows that the project are running behind schedule.”

  • “Project” is singular and requires the singular verb “is,” not “are.” The subject-verb agreement error is between “project” and “are.”
  • Answer: ‘are’ should be ‘is’

Vocabulary in Context

Infosys verbal questions often test words through a sentence rather than direct definition. Analogy, synonym-in-context, and odd-one-out word groups are the common formats.

• Q5. Choose the word most similar in meaning to “Tenacious”: (A) Fragile (B) Persistent (C) Flexible (D) Timid
  • Answer: (B) Persistent

Pseudo-Code Section (SP and PP Tracks)

The pseudo-code section tests your ability to trace the logic of a code block and predict the output. No coding is required. You read, trace, and select from multiple-choice options.

Question formats vary: predict the output of a given block, identify the value of a variable after a loop completes, or find the step at which a loop condition first changes.

Tracing a Pseudo-Code Block

• Q1. Trace the following block. What does it print?

x = 10
y = 3
while y > 0:
    x = x - y
    y = y - 1
print(x)

• Iteration 1: y = 3 (condition true), x = 10 minus 3 = 7. y becomes 2.

• Iteration 2: y = 2 (condition true), x = 7 minus 2 = 5. y becomes 1.

• Iteration 3: y = 1 (condition true), x = 5 minus 1 = 4. y becomes 0.

• Iteration 4: y = 0 (condition false). Loop ends.

• print(x) outputs 4.

• Answer: 4

• Q2. What is the value of result after this block runs?

result = 0
for i in range(1, 5):
    if i % 2 == 0:
        result = result + i

• i = 1: 1 % 2 = 1, condition false. result stays 0.
• i = 2: 2 % 2 = 0, condition true. result = 0 + 2 = 2.
• i = 3: 3 % 2 = 1, condition false. result stays 2.
• i = 4: 4 % 2 = 0, condition true. result = 2 + 4 = 6.
• Note: range(1, 5) stops before 5. Even-number accumulation inside a for-loop is a standard filter pattern in Infosys pseudo-code sets.
• Answer: 6

Preparation Approach for Pseudo-Code

The most common mistake is misreading loop termination. Build the habit of writing variable values on a fresh line for each iteration rather than tracking them mentally. Three to five practice blocks per day over two weeks builds the tracing speed the timed section requires.

Non-CS branch students are not at a disadvantage here. The pseudo-code section tests logical tracing, not language syntax. Students from ECE, EEE, and mechanical backgrounds who practise the tracing method score consistently.

Infosys Hiring in 2026 and the AI Pay Premium

Infosys onboarded 20,000 freshers in FY26 and plans the same number in FY27, per CEO Salil Parekh’s Q4 FY26 commentary. At that scale, the aptitude test functions as a genuine first-round filter rather than a formality.

Parekh confirmed in the same Q4 FY26 commentary that Infosys now offers different starting compensation for candidates with AI-attuned skills and is building a forward-deployed engineering pool to work directly with clients on AI solutions. The SP and PP tracks, with their pseudo-code sections and stronger coding requirement, are the closest entry points to that pool.

The InfyTQ certification guide covers the registration process, exam pattern, and preparation path for students targeting SP or PP shortlisting.

Tracing pseudo-code under time pressure uses the same mental model as working with LLM APIs, where you follow a prompt through a chain of function calls to diagnose an unexpected output. TinkerLLM (₹299) applies that same read-and-trace logic to LLM fundamentals in a self-paced format, starting with API calls and moving through prompt structure and RAG basics.