Aptitude Test

18 min read

•

Oct 8, 2024

Soumyata Singh

Whether you’re an experienced professional or a fresher, facing interviews and getting your desired position requires some preparation. An aptitude test for software developer job is designed to assess your problem-solving skills. It covers a range of topics like math, logic, and programming.

You'll encounter different questions that test your quantitative ability, verbal skills, and coding knowledge. Preparing for these tests can improve your chances of landing the job. In this blog, we share what to expect and provide sample questions to help you prepare.

**Most Important Aptitude Test Questions for Software Developers**

There are various aspects and skills that you need to excel to make it to the other side of aptitude tests and interviews. Moving ahead, let’s understand these better.

**Quantitative Aptitude Section**

The quantitative aptitude section in an aptitude test for software developer jobs focuses on basic math concepts. This section checks your ability to solve real-world problems using mathematical skills. Below are the key topics covered and sample questions to help you prepare.

**Algebra**

Algebra involves solving equations and working with variables. You might encounter problems like solving for unknowns or simplifying expressions.

**Question 1: Find the difference between two numbers, 84 and 29. **

**Answer:**

The difference between the two numbers is calculated as:

84 − 29 = 55

So, the answer is **55**.

**Question 2: A number is multiplied by 13 and then increased by 180 to get 650. Find the number. **

**Answer:**

Let the number be x.

According to the problem: 13x + 180 = 650

Solving for x: 13x = 650 − 180 = 470

x = 470 ⁄13 = 36.15

So, the number is approximately **36**.

**Alligations and Mixtures**

This topic deals with mixing quantities in different ratios to find averages. Example: If you mix two solutions of milk and water in a 3:2 and 5:3 ratio, what is the ratio of the final solution?

**Question 3: What is the ratio of petrol to kerosene if you mix 3 liters of petrol with 2 liters of kerosene? **

**Answer:**

The ratio is found by comparing the quantities of petrol and kerosene:

Ratio of petrol to kerosene = 3/2

Thus, the ratio is 3:2.

**Averages, Mean, Median and Mode**

Understanding averages is key in solving problems about data analysis. You’ll calculate the mean, median, and mode for sets of numbers. Example: Find the median of the set: 3, 5, 7, 9, 11.

**Question 4: The average age of a man and his son is 30. The man is twice as old as his son. What is the man’s age? **

**Answer:**

Let the son’s age be x. Then, the man’s age is 2x. The average age is given by:

(x+2x)/2 = 30

Solving for x:

3x=60

x=20

So, the son is 20 years old, and the man is 2 × 20 = 40.

Thus, the man’s age is 40 years.

**Question 5: Find the average of the numbers 12, 16, 20, 24, and 28.**

**Answer:**

The average is calculated by summing the numbers and dividing by the count:

Average = (12 + 16 + 20 + 24 + 28) / 5 = 100 / 5 = 20

So, the average is 20.

**Number Systems**

Number systems test your knowledge of integers, decimals, and other number types. You might need to identify the greatest common divisor or least common multiple. Example: What is the least common multiple of 12 and 15?

**Question 6: How many numbers between 1 and 100 are divisible by 7? **

**Answer:**

To find the numbers divisible by 7, divide 100 by 7:

100 / 7 = 14.28

There are 14 whole numbers divisible by 7 between 1 and 100, starting from 7 (i.e., 7, 14, 21, ..., 98).

Thus, the answer is 14.

**Question 7: Find the number of integers between 200 and 500 divisible by 8. **

**Answer:**

To find these numbers, divide 200 and 500 by 8:

First number: 200 ÷ 8 = 25 (nearest whole number is 200).

Last number: 500 ÷ 8 = 62.5 (nearest whole number is 496).

So, there are 38 numbers between 200 and 500 divisible by 8.

Thus, the answer is 38.

**Percentage**

Questions about percentage are common and often involve real-world scenarios, like discounts or growth rates.

**Question 8: If the price of mangoes is reduced by 20%, what is the new price if the original price was $50? **

**Answer:**

A 20% reduction means the new price is 80% of the original price:

New Price = 50 × (80/100) = 40

So, the new price is $40.

**Permutation and Combinations**

This topic tests your understanding of how to arrange or select items. Example: In how many ways can you arrange the letters in the word "CAT"?

**Question 9: How many ways can 5 people be arranged in a line? **

**Answer:**

The number of ways to arrange 𝑛 people in a line is given by 𝑛!(factorial).

For 5 people, the number of arrangements is:

5!=5×4×3×2×1=120

So, the answer is 120 ways.

**Probability**

Probability involves calculating the chance of an event happening. Example: What is the probability of drawing a red card from a standard deck of 52 cards?

**Question 10: What is the probability of getting a head when tossing a coin? **

**Answer:**

There are two possible outcomes when tossing a coin: head or tail.

The probability of getting a head is: ½

So, the answer is 1/2.

**Profit and Loss**

Profit and loss problems simulate real-life business scenarios. You’ll calculate profits or losses based on cost and selling price. Example: A shop owner buys an item for $100 and sells it for $150. What is the percentage profit?

**Question 11: A shopkeeper sells an item for INR120, earning a profit of 20%. What was the cost price? **

**Answer:**

Let the cost price be 𝑥

According to the problem:

𝑥 + 0.2𝑥 = 120

1.2𝑥 = 120

𝑥 = 120 / 1.2 = 100

Thus, the cost price was INR100.

**Progressions**

Progressions, like arithmetic or geometric sequences, test your ability to identify patterns in number series. Example: What is the 10th term of the arithmetic progression 2, 4, 6, 8, ...?

**Question 12: What is the sum of the first 10 terms of an arithmetic progression where the first term is 5 and the common difference is 2? **

**Answer:**

The sum of an arithmetic progression is given by the formula:

Sn = n/2 ×[2a+(n−1)d]

Where 𝑎 = 5, 𝑑 = 2, and 𝑛 = 10:

S10 = 2/10 ×[2×5+(10−1)×2]=5×[10+18]=5×28=140

Thus, the sum is 140.

**Ratio, Proportions and Partnerships**

Ratio and proportion questions deal with comparing quantities and partnerships. Example: If two people invest in a business in a 3:2 ratio, how are the profits shared?

**Question 13: What is the ratio of petrol to kerosene if you mix 3 liters of petrol with 2 liters of kerosene? **

**Answer:**

The ratio is found by comparing the quantities of petrol and kerosene:

Ratio of petrol to kerosene = 2/3

Thus, the ratio is 3:2.

**Simple and Compound Interest**

You’ll solve problems on how interest accumulates over time, either simple or compounded.

**Question 14: Find the compound interest on INR5000 at 10% per annum for 2 years. **

**Answer:**

The compound interest formula is:

CI=P(1+r/100)t−P

Where 𝑃 = 5000, 𝑟 = 10, and 𝑡 =2:

CI=5000(1+10/100)2−5000=5000×1.21−5000=6050−5000=1050

So, the compound interest is INR 1050.

**Speed, Distance and Time**

These problems ask you to calculate one of the three variables when the other two are given.

**Question 15: A train moves 120 km in 2 hours. What is its speed? **

**Answer: **

The speed of the train is given by:

Speed = Distance / Time = 120 / 2 = 60 km/h

Thus, the speed is 60 km/h.

**Question 16: A car travels at a speed of 80 km/h for 3 hours. How far does it travel? **

**Answer: **

The distance is calculated as:

Distance = Speed × Time = 80 × 3 = 240 km

Thus, the car travels 240 km.

**Time and Work**

This topic involves calculating how long it takes for one or more workers to complete a task. Example: If it takes 3 people 10 days to build a wall, how many days would it take for 5 people?

**Question 17: If 5 workers complete a task in 10 days, how long will it take 10 workers to complete the same task? **

**Answer:**

Work is inversely proportional to the number of workers. So:

New Time = (Old Workers/New Workers) × Old Time

New Time = (5/10) × 10 = 5 days

Thus, it will take 5 days.

**Trains, Boats and Streams**

This subtopic includes problems related to relative speed, especially in cases of boats moving in rivers or trains passing each other. Example: If a boat goes 10 km upstream in 2 hours and the stream flows at 2 km/h, what is the speed of the boat in still water?

**Question 17: How long will it take for a boat moving at 5 km/h in still water to cross a river 20 km wide if the current is 3 km/h? **

**Answer:**

The effective speed of the boat against the current is:

Effective Speed = 5 − 3 = 2 km/h

Time is calculated as:

Time = Distance / Speed = 20/2 = 10 hours

So, it will take 10 hours.

These detailed solutions should help you prepare thoroughly for the aptitude test for software developer roles.

**Data Interpretation and Logical Reasoning**

The data interpretation and logical reasoning section in an aptitude test for software developer jobs examines how well you analyze information. You'll solve problems related to patterns, assumptions, and logical conclusions. Here are the key areas covered, along with sample questions to guide your preparation.

**1. Assumptions and Conclusions**

This type of question tests your ability to identify logical assumptions and conclusions based on provided information.

**Example Question:**

**Statement: **"All software developers are problem solvers."

**Assumption:** "If you're a problem solver, you can become a software developer." Is this assumption valid?

**2. Cubes**

Cubes questions challenge you to visualize 3D objects and manipulate them mentally. You'll often need to find out how a cube behaves when painted, cut, or rotated.

**Example Question:**

A cube is painted on all six sides and then cut into 64 smaller cubes. How many of these cubes will have no paint?

**3. Data Sufficiency**

Data sufficiency questions present a problem and give you two or more statements. Your task is to determine if the information provided is enough to solve the problem.

**Example Question:**

Find the total number of software developers in a company.

**Statement 1: **40% of the employees are software developers.

**Statement 2:** The company has 500 employees.

Is the data sufficient to answer the question?

**4. Number Series**

In this section, you'll be asked to identify patterns in a sequence of numbers and predict the next number.

**Example Question:**

What is the next number in the series: 2, 6, 12, 20, 30, ...?

**5. Puzzles**

Puzzles challenge your critical thinking and logical reasoning. These questions often require you to arrange data or solve problems based on constraints.

**Example Question:**

There are five houses in a row. Each house is a different color, and each is owned by a software developer with a unique favorite programming language. No two neighbors have the same favorite language. Solve the puzzle based on the following clues.

**6. Syllogism**

Syllogism problems involve statements and conclusions. You have to determine whether the conclusion logically follows from the statements.

**Example Question:**

**Statement 1: **All programmers write code.

**Statement 2:** Some software developers are programmers.

**Conclusion:** Some software developers write code. Is this conclusion valid?

Along with quantitative and logical reasoning, there are various other skills you need to strengthen. Let’s explore them moving further.

**Verbal Ability**

The verbal ability section of the aptitude test for software developer roles focuses on your communication skills. This part of the test assesses how well you understand written material, structure emails, and compose letters. Each area requires clarity, precision, and the ability to convey ideas effectively.

**1. Comprehension Passages**

In comprehension passages, you'll be asked to read a passage and answer questions based on it. This measures your reading comprehension and analytical thinking. Comprehension passages are designed to test how well you understand and interpret written content. You will be given a passage, usually related to technology or general topics, followed by questions that assess your ability to:

Identify key points

Analyze arguments

Infer meanings or conclusions

Find supporting evidence from the text

This part is crucial because reading and understanding technical documentation is a core part of a software developer's job. You will need to pick out essential information and interpret it correctly.

**2. Email Writing**

Email writing tests your ability to communicate professionally in a concise, clear, and organized way. As a software developer, you'll often need to send updates, explain issues, or coordinate with team members through email. In an aptitude test, you will likely be asked to draft a formal or semi-formal email addressing a situation or responding to a specific scenario.

Key areas to focus on:

**Proper structure:**Begin with a greeting, introduce your purpose, provide details, and close politely.**Clarity:**Keep your sentences clear and free of jargon, focusing on the main point.**Professional tone:**Use a formal tone, but avoid sounding too rigid.

**3. Letter Writing**

Letter writing in the aptitude test measures your ability to compose formal letters. This is useful in a software developer role when communicating with HR, clients, or other departments where formal correspondence is required. Letters may involve job-related matters, requests, or follow-up communications.

Key elements:

**Structure:**Your letter should have a heading, date, recipient’s address, subject, salutation, body, and closing.**Professionalism:**It’s important to maintain a professional tone while clearly stating your intent.**Relevance:**Focus on the main issue and keep the letter to the point.

Now that you understand how verbal skills play a role in developer jobs, let’s move on to the core technical skills you'll need.

**Computer Science and Programming**

In an aptitude test for software developer, your programming and computer science knowledge is tested rigorously. This section evaluates how well you understand languages, algorithms, and systems, which are essential for solving real-world problems. Let’s get to know the key areas covered in this section:

**1. Java**

Java is a widely-used programming language, known for its platform independence. You might be asked **important questions**** **on syntax, object-oriented principles, and exception handling. Java’s strong use in backend development makes it critical for most software systems.

**2. Python**

Python is famous for its simplicity and readability. It’s used in web development, data analysis, and automation. Its flexibility makes it a must-know language for developers. You’ll likely face questions on basic syntax, data types, and functions.

**3. C++**

C++ is known for its high performance and memory control, often used in systems programming and game development. In the test, you may be asked about pointers, memory management, and inheritance.

Read our blog for the most important **C++ interview questions**.

**4. Data Structures**

Data structures are essential for efficient data management. Questions might revolve around arrays, linked lists, stacks, queues, trees, and graphs. Understanding when and how to use each structure is important for optimizing code performance.

**5. Object-Oriented Programming Systems (OOPS)**

OOPS concepts are crucial in software design. You’ll be asked questions on abstraction, encapsulation, inheritance, and polymorphism. These concepts are central to writing maintainable and scalable code.

**6. Algorithms**

Algorithms are at the heart of programming problem-solving. Expect questions on searching, sorting, and dynamic programming. Understanding algorithm efficiency (Big-O notation) is also necessary.

**7. Operating Systems**

Understanding operating systems is necessary for optimizing resource allocation and process management. You may face questions on memory management, threading, and process synchronization.

**8. Computer Networks**

Networking knowledge is essential for communication between devices. Questions could be based on topics like protocols (TCP/IP), OSI model, and data transmission.

Now that you know about the important technical foundations, let's see how to prepare for the technical interview, which tests your problem-solving abilities further.

**Preparing for Technical Interview**

Preparing for a technical interview is as important as acing the aptitude test for software developer roles. This section focuses on sharpening your competitive programming, enhancing problem-solving skills, and familiarizing yourself with example questions. Each of these aspects helps you perform better during interviews, ensuring you stand out.

**1. Competitive Programming**

Competitive programming is a great way to practice solving complex problems under time constraints. Many platforms provide real-time challenges, simulating interview conditions. Through competitive programming, you improve your coding speed, efficiency, and ability to think critically.

**2. Problem-Solving Skills**

In any technical interview, problem-solving is at the core. You will need to demonstrate logical thinking, algorithm selection, and efficiency in your code. Focus on sharpening these skills through regular practice of coding challenges, especially those aligned with the aptitude test for software developer interviews.

**3. Example Questions from Articles**

Referencing online articles and blogs for sample questions is a helpful practice. Many websites provide commonly asked interview questions, categorized by topics like data structures or algorithms. Practice these examples to build confidence before your interview.

It’s also important to focus on behavioral interview preparation, where communication and attitude play key roles. Let’s get some cues in the next section.

**HR Interview Insights**

Once you clear the aptitude test for software developer roles and technical rounds, the HR interview is the final step. This stage evaluates your personal and professional fit for the company. Let’s explore key areas the HR interview focuses on.

**1. Personal Background Questions**

HR managers often start by asking about your personal background. These questions aim to understand who you are, your education, and your interests. Keep your answers concise, focusing on relevant details like your academic qualifications, hobbies, and values.

**2. Professionalism**

Your professionalism is assessed through how you present yourself and respond to various questions. You must demonstrate respect, confidence, and clarity. The interview will likely touch on your past experiences and how you handle work-related challenges. This is also where your soft skills come into play.

**3. Expectations and Negotiation**

The HR interview will discuss your expectations, especially around salary and work environment. Be clear about your goals but flexible in your approach. Research market trends so you can confidently discuss salary without underestimating your value. This is your opportunity to negotiate terms that align with your career path.

**Conclusion **

Preparing for an aptitude test for software developer roles requires focus on various areas. We've covered essential sections like quantitative aptitude, data interpretation, programming, and HR interview insights. Each segment is crucial in testing your overall capabilities.

As a final tip, practice consistently. Know **how to stand out in interviews**. Work on improving your problem-solving skills, technical knowledge, and communication. Make sure to review common questions and stay updated with industry trends.

For additional preparation, explore online coding platforms, mock interview websites, and relevant blogs. These resources can boost your confidence and readiness.

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