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Quantitative Aptitude

Practice20 questions

Question 1

Percentage Problem

Problem

The price of a product increased by 20%. By what percentage should consumption be reduced to keep expenditure same?

Question 2

Mixture Problem

Problem

A mixture contains milk and water in ratio 3:2. If 10 liters of water is added, ratio becomes 2:3. Find initial quantity of mixture.

Question 3

Profit & Loss - Successive Discounts

Problem

A shopkeeper gives two successive discounts of 10% and 20% on an item. What is the effective discount percentage?

Question 4

Time & Work - Efficiency

Problem

A is twice as efficient as B. Together they complete a work in 12 days. In how many days will A alone complete it?

Question 5

Simple Interest - Rate Calculation

Problem

A sum of ₹8,000 amounts to ₹9,600 in 4 years at simple interest. Find the rate of interest per annum.

Question 6

Compound Interest - Half Yearly

Problem

Find compound interest on ₹5,000 for 1 year at 10% per annum, compounded half-yearly.

Question 7

Speed & Distance - Relative Speed

Problem

Two trains of lengths 100m and 150m are running in the same direction at speeds of 50 km/hr and 40 km/hr respectively. Find the time taken by faster train to overtake the slower train.

Question 8

Speed & Distance - Average Speed

Problem

A person travels first half of distance at 40 km/hr and second half at 60 km/hr. Find average speed.

Question 9

Permutations - Arrangements

Problem

In how many ways can 5 people be arranged in a row if two particular people must sit together?

Question 10

Combinations - Selection

Problem

In how many ways can 3 students be selected from a group of 8 students?

Question 11

Pipes & Cisterns - Multiple Pipes

Problem

Three pipes A, B, C can fill a tank in 12, 15, and 20 hours respectively. If all three are opened together, how long will it take to fill the tank?

Question 12

Probability - Cards

Problem

Two cards are drawn from a pack of 52 cards. What is the probability that both are aces?

Question 13

Ratio & Proportion - Three Quantities

Problem

If A:B = 2:3 and B:C = 4:5, find A:B:C.

Question 14

Percentage - Successive Changes

Problem

A number is first increased by 25% and then decreased by 20%. Find the net percentage change.

Question 15

Time & Work - Work and Wages

Problem

A can do a work in 10 days and B in 15 days. They work together for 4 days and then A leaves. If total wages is ₹3,000, find B's share.

Question 16

Data Interpretation - Table

Problem

If Product A sold 25% more than Product B, and Product B sold 40,000 units, find Product A's sales.

Question 17

Ages - Ratio Problem

Problem

The ratio of present ages of father and son is 7:3. After 10 years, the ratio becomes 2:1. Find the present age of father.

Question 18

Partnership - Investment Periods

Problem

A invests ₹5,000 for 6 months, B invests ₹6,000 for 8 months. If profit is ₹4,200, find A's share.

Question 19

Boats & Streams - Upstream/Downstream

Problem

A boat takes 3 hours to go 12 km upstream and 2 hours to go 12 km downstream. Find the speed of the boat in still water.

Question 20

Number System - Divisibility

Problem

Find the smallest number that must be added to 1056 to make it divisible by 23.

Logical Reasoning

Practice20 questions

Question 1

Number Series - Square Pattern

Problem

Find next number: 1, 4, 9, 16, 25, ?

Question 2

Number Series - Prime Pattern

Problem

Find next number: 2, 3, 5, 7, 11, ?

Question 3

Number Series - Fibonacci Variant

Problem

Find next number: 1, 1, 2, 3, 5, 8, ?

Question 4

Letter Series - Skip Pattern

Problem

Find next letter: B, E, H, K, ?

Question 5

Coding-Decoding - Reverse Pattern

Problem

If "INFOSYS" is coded as "SYFOSNI", how is "SYSTEM" coded?

Question 6

Coding-Decoding - Position Sum

Problem

If "CAT" is coded as "3120" (C=3, A=1, T=20), how is "DOG" coded?

Question 7

Syllogism - Three Statements

Problem

Statements:

Some books are novels
All novels are stories
No story is a poem

Conclusions:

I) Some books are stories
II) No novel is a poem
III) Some stories are books

Question 8

Blood Relations - Complex

Problem

Pointing to a photograph, a man said, "She is the daughter of my grandfather's only son." How is the man related to the person in the photograph?

Question 9

Direction Sense - Multiple Turns

Problem

A person walks 10m north, then 5m east, then 10m south, then 5m west. Where is he from starting point?

Question 10

Seating Arrangement - Circular with Conditions

Problem

Six friends A, B, C, D, E, F sit around a circular table. A sits opposite D. B sits between A and C. E is not adjacent to A. Who sits opposite E?

Question 11

Ordering & Ranking - From Both Ends

Problem

In a queue, Ravi is 15th from front and 20th from back. How many people are in the queue?

Question 12

Cube Problem - Three Colors

Problem

A cube is painted red on two opposite faces, blue on two adjacent faces, and left unpainted on remaining faces. It is cut into 64 smaller cubes. How many cubes have exactly one painted face?

Question 13

Statement & Assumptions

Problem

Statement: "Use our product for better results."

Assumptions:

I) People want better results
II) The product gives better results

Question 14

Data Sufficiency - Two Statements

Problem

What is the value of x + y?

Statement 1: x = 5
Statement 2: y = 10

Question 15

Logical Deduction - Conditional

Problem

If all roses are flowers, and some flowers are red, which must be true?

a) All roses are red
b) Some roses are red
c) Some red things are flowers
d) None of the above

Question 16

Pattern Recognition - Alternating

Problem

Find next number: 2, 5, 10, 17, 26, ?

Question 17

Seating Arrangement - Linear with Conditions

Problem

Five people A, B, C, D, E sit in a row. A is not at either end. B sits next to A. C sits at one end. D sits between C and E. Who sits in the middle?

Question 18

Blood Relations - Generation Skip

Problem

A is the father of B. C is the son of B. D is the brother of A. How is D related to C?

Question 19

Direction Sense - Clockwise

Problem

A person faces north. He turns 90° clockwise, then 180° clockwise, then 270° clockwise. In which direction is he facing now?

Question 20

Number Series - Multiplication Pattern

Problem

Find next number: 3, 6, 12, 24, 48, ?

Verbal Ability

Practice15 questions

Question 1

Reading Comprehension - Inference

Problem

Passage: "Cloud computing has transformed how businesses operate. Companies can now access computing resources on-demand without maintaining physical infrastructure. This has led to significant cost savings and increased flexibility."

Question: What is the main advantage of cloud computing mentioned?

Question 2

Grammar - Parallelism

Problem

Choose the correct sentence:

a) She likes reading, writing, and to dance
b) She likes reading, writing, and dancing
c) She likes to read, writing, and dancing

Question 3

Grammar - Conditional Sentences

Problem

Choose the correct form: "If I _____ rich, I would travel the world."

a) am
b) was
c) were
d) will be

Question 4

Vocabulary - Synonyms

Problem

Find the synonym of "MAGNIFICENT":

a) Ordinary
b) Splendid
c) Small
d) Ugly

Question 5

Vocabulary - Antonyms

Problem

Find the antonym of "BRILLIANT":

a) Bright
b) Dull
c) Shining
d) Smart

Question 6

Sentence Correction - Articles

Problem

Choose the correct sentence:

a) He is a honest man
b) He is an honest man
c) He is the honest man

Question 7

Para Jumbles - Logical Flow

Problem

Arrange the sentences:

Therefore, regular exercise is essential
Physical activity improves mental health
Studies show that exercise reduces stress
It also enhances cognitive function

Question 8

Error Spotting - Pronoun Agreement

Problem

Find the error: "Each of the students have completed their assignment."

Question 9

Fill in the Blanks - Prepositions

Problem

"She is allergic _____ peanuts."

a) to
b) from
c) with
d) by

Question 10

Idioms & Phrases

Problem

What does "Hit the nail on the head" mean?

a) To make a mistake
b) To be exactly right
c) To cause trouble
d) To work hard

Question 11

Reading Comprehension - Main Idea

Problem

Passage: "Renewable energy sources like solar and wind power are becoming increasingly cost-effective. Many countries are investing heavily in these technologies to reduce carbon emissions and combat climate change."

Question: What is the main topic of the passage?

Question 12

Sentence Completion - Conjunctions

Problem

"She studied hard _____ she could pass the exam."

a) so that
b) because
c) although
d) unless

Question 13

Word Usage - Commonly Confused

Problem

Choose the correct word: "The _____ of the meeting was productive."

a) affect
b) effect
c) impact
d) result

Question 14

Active/Passive Voice - Complex

Problem

Convert to passive: "They are building a new bridge."

Question 15

Sentence Improvement

Problem

Choose the improved version: "The data shows that the company's profits have increased."

a) The data show that the company's profits have increased
b) The data shows that the company's profit have increased
c) The datas show that the company's profits have increased

Pseudo Code

Practice15 questions

Question 1

C Output - Post and Pre Increment

Problem

What is the output?

int main() {
    int a = 5, b = 10;
    printf("%d %d", a++, ++b);
    printf(" %d %d", a, b);
    return 0;
}

Question 2

Loop with Break

Problem

What is the output?

int main() {
    int i;
    for(i=1; i<=10; i++) {
        if(i == 5) break;
        printf("%d ", i);
    }
    return 0;
}

Question 3

Array and Pointer

Problem

What is the output?

int main() {
    int arr[] = {10, 20, 30, 40};
    int *p = arr;
    printf("%d %d", *p, *(p+3));
    return 0;
}

Question 4

Recursion - Sum

Problem

What is the output?

int sum(int n) {
    if(n == 0) return 0;
    return n + sum(n-1);
}

printf("%d", sum(5));

Question 5

String Length

Problem

What is the output?

int main() {
    char str[] = "INFOSYS";
    int len = 0;
    while(str[len] != '\0') len++;
    printf("%d", len);
    return 0;
}

Question 6

Pointer Arithmetic - Advanced

Problem

What is the output?

int main() {
    int arr[] = {1, 2, 3, 4, 5};
    int *p = &arr[2];
    printf("%d %d", p[-1], p[1]);
    return 0;
}

Question 7

Nested Loops - Pattern

Problem

What is the output?

int main() {
    int i, j;
    for(i=1; i<=3; i++) {
        for(j=1; j<=i; j++) {
            printf("%d", j);
        }
        printf("\n");
    }
    return 0;
}

Question 8

Java Output - String

Problem

What is the output?

public class Test {
    public static void main(String[] args) {
        String s1 = "Hello";
        String s2 = new String("Hello");
        System.out.println(s1 == s2);
        System.out.println(s1.equals(s2));
    }
}

Question 9

Python Output - List

Problem

What is the output?

def func(lst):
    if len(lst) == 0:
        return 0
    return lst[0] + func(lst[1:])

print(func([1, 2, 3, 4]))

Question 10

Conditional - Ternary

Problem

What is the output?

int main() {
    int x = 15, y = 10;
    int z = (x > y) ? x : y;
    printf("%d", z);
    return 0;
}

Question 11

Array Traversal

Problem

What is the output?

int main() {
    int arr[5] = {1, 2, 3, 4, 5};
    int sum = 0;
    for(int i=0; i<5; i++) {
        if(arr[i] % 2 == 0) sum += arr[i];
    }
    printf("%d", sum);
    return 0;
}

Question 12

While Loop - Count

Problem

What is the output?

int main() {
    int count = 0, num = 1234;
    while(num > 0) {
        count++;
        num /= 10;
    }
    printf("%d", count);
    return 0;
}

Question 13

Function - Parameter Passing

Problem

What is the output?

void change(int x) {
    x = 20;
}

int main() {
    int a = 10;
    change(a);
    printf("%d", a);
    return 0;
}

Question 14

String Copy

Problem

What is the output?

int main() {
    char src[] = "Hello";
    char dest[10];
    int i = 0;
    while(src[i] != '\0') {
        dest[i] = src[i];
        i++;
    }
    dest[i] = '\0';
    printf("%s", dest);
    return 0;
}

Question 15

Modulo and Division

Problem

What is the output?

int main() {
    int x = 25;
    printf("%d %d", x / 4, x % 4);
    return 0;
}

Coding Problems

Practice12 questions

Question 1

Palindrome Check

Problem

Check if string is palindrome (case-insensitive).

Question 2

Find Maximum Element

Problem

Find the maximum element in an array.

Question 3

Count Vowels

Problem

Count the number of vowels in a string.

Question 4

Sum of Array Elements

Problem

Find sum of all elements in an array.

Question 5

Linear Search

Problem

Search for an element in an array.

Question 6

Reverse String

Problem

Reverse a string without using built-in functions.

Question 7

Check Prime Number

Problem

Check if a number is prime.

Question 8

Find Missing Number

Problem

Find missing number in array containing numbers from 1 to n (one missing).

Question 9

Remove Duplicates from Sorted Array

Problem

Remove duplicates from sorted array and return new length.

Question 10

Check Anagram

Problem

Check if two strings are anagrams.

Question 11

Find Second Smallest

Problem

Find the second smallest element in an array.

Question 12

Count Character Frequency

Problem

Count frequency of each character in a string.

public class Test { public static void main(String[] args) { String s1 = "Hello"; String s2 = new String("Hello"); System.out.println(s1 == s2); System.out.println(s1.equals(s2)); } }

int main() { char src[] = "Hello"; char dest[10]; int i = 0; while(src[i] != '\0') { dest[i] = src[i]; i++; } dest[i] = '\0'; printf("%s", dest); return 0; }

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Infosys 2025-irt

Quantitative Aptitude

Percentage Problem

Problem

Mixture Problem

Problem

Profit & Loss - Successive Discounts

Problem

Time & Work - Efficiency

Problem

Simple Interest - Rate Calculation

Problem

Compound Interest - Half Yearly

Problem

Speed & Distance - Relative Speed

Problem

Speed & Distance - Average Speed

Problem

Permutations - Arrangements

Problem

Combinations - Selection

Problem

Pipes & Cisterns - Multiple Pipes

Problem

Probability - Cards

Problem

Ratio & Proportion - Three Quantities

Problem

Percentage - Successive Changes

Problem

Time & Work - Work and Wages

Problem

Data Interpretation - Table

Problem

Ages - Ratio Problem

Problem

Partnership - Investment Periods

Problem

Boats & Streams - Upstream/Downstream

Problem

Number System - Divisibility

Problem

Logical Reasoning

Number Series - Square Pattern

Problem

Number Series - Prime Pattern

Problem

Number Series - Fibonacci Variant

Problem

Letter Series - Skip Pattern

Problem

Coding-Decoding - Reverse Pattern

Problem

Coding-Decoding - Position Sum

Problem

Syllogism - Three Statements

Problem

Blood Relations - Complex

Problem

Direction Sense - Multiple Turns

Problem

Seating Arrangement - Circular with Conditions

Problem

Ordering & Ranking - From Both Ends

Problem

Cube Problem - Three Colors

Problem

Statement & Assumptions

Problem

Data Sufficiency - Two Statements

Problem

Logical Deduction - Conditional

Problem

Pattern Recognition - Alternating

Problem