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2026 NQT

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Practice Questions

Practice58 questions

Question 1

Work and Production Rate

Problem

A factory produces x units of a product in 24 days. How many units will it produce in 15 days?

Question 2

Discount and Profit

Problem

A man buys a shirt at a discount of 25% on its marked price and sells it at a profit of 20% on its marked price. If the marked price is $400, what is the selling price of the shirt?

Question 3

Volume of a Cube

Problem

If a cube has a volume of 512 cubic centimeters, what is the length of its side?

Question 4

Average Speed

Problem

If a car travels a distance of 240 km with a speed of 60 km/h for the first 4 hours and then with a speed of 40 km/h for the next 3 hours, what is the average speed of the car for the entire journey?

Question 5

Profit Percentage

Problem

If the cost price of an item is $200 and the selling price is$ 250, what is the profit percentage?

Question 6

Simplification

Problem

Simplify the following expression: (8 × 4 + 6) / 2 - 5

Question 7

Linear Equation

Problem

Find the value of 'x' in the equation: 3x + 10 = 31

Question 8

Discounted Price

Problem

A bookstore gives a 15% discount on all books. If the original price of a book is $40, what will be the discounted price?

Question 9

Consecutive Odd Numbers

Problem

The sum of two consecutive odd numbers is 64. What are the numbers?

Question 10

Time to Cover Distance

Problem

A train travels a distance of 240 km at a constant speed of 60 km/h. How much time will it take to cover the distance?

Question 11

Synonym

Problem

Choose the correct synonym for the word "Ephemeral": (a) Permanent (b) Fleeting (c) Eternal (d) Prolonged

Question 12

Spelling

Problem

Identify the correctly spelled word: (a) Exaggerrate (b) Exagerate (c) Exaggerate (d) Exaggarate

Question 13

Subject-Verb Agreement

Problem

Choose the sentence with correct subject-verb agreement:
(a) The group of students has started their project.
(b) The group of students have started their project.
(c) The group of students is starting their project.
(d) The group of students are starting their project.

Question 14

Fill in the Blank

Problem

He was _____ tired that he fell asleep immediately. (a) Too (b) Two (c) To (d) 2

Question 15

Use of Articles

Problem

Identify the correct sentence with the use of articles:
(a) I have a apple.
(b) I have an apple.
(c) I have the apple.
(d) I have apple.

Question 16

Number Series

Problem

Choose the next number in the series: 2, 5, 11, 20, ?

Question 17

Coding-Decoding

Problem

If APPLE is coded as 116165 (using alphabet positions), how is ORANGE coded?

Question 18

Odd One Out

Problem

Which word does not belong to the group? (a) Square (b) Circle (c) Rectangle (d) Triangle

Question 19

Letter Coding

Problem

If CAT is coded as 3-1-20, DOG is coded as 4-15-7, how is FISH coded?

Question 20

Alphabetical Ordering

Problem

Arrange the following words in alphabetical order: Monitor, Apple, Keyboard, Mouse

Question 21

Second Largest Element in an Array

Problem

Write a program to find the second largest number in an array.

Example:

Input: [12, 35, 1, 10, 34, 1]
Output: 34

Question 22

Reverse an Array In-Place

Problem

Write a program to reverse an array in-place.

Example:

Input: [10, 20, 30, 40, 50]
Output: [50, 40, 30, 20, 10]

Question 23

Find Duplicate Elements in an Array

Problem

Write a program to find the duplicate values in an array of integers.

Example:

Input: [10, 20, 20, 30, 30, 30, 40, 50, 50]
Output: 20 30 30 50

Question 24

Count Even and Odd Integers

Problem

Write a program to find the number of even and odd integers in a given array of integers.

Example:

Input: [10, 20, 21, 30, 31, 40, 41]
Output: Even: 4, Odd: 3

Question 25

Common Elements Between Two Sorted Arrays

Problem

Write a program to find the common elements between two arrays of sorted elements.

Example:

Input: arr1 = [1, 3, 4, 5, 7], arr2 = [2, 3, 5, 6]
Output: 3 5

Question 26

Palindrome Check

Problem

Write a program to check whether a given string is a palindrome or not.

Example:

Input: "madam"
Output: madam is a palindrome

Question 27

Reverse Words in a Sentence

Problem

Write a program to reverse the words in a given sentence without using any library method.

Example:

Input: "Hello World"
Output: "olleH dlroW "

Question 28

Count Vowels and Consonants

Problem

Write a program to count the total number of vowels and consonants in a string.

Example:

Input: "Hello World"
Output: Vowels: 3, Consonants: 7

Question 29

Anagram Check

Problem

Write a program to check whether two strings are anagrams of each other.

Example:

Input: str1 = "Listen", str2 = "Silent"
Output: Listen and Silent are anagrams.

Question 30

Convert String to Lowercase

Problem

Write a program to convert a given string into lowercase.

Example:

Input: "HELLO WORLD"
Output: "hello world"

Question 31

Fibonacci Series

Problem

Write a program to print the Fibonacci series up to n terms.

Example:

Input: n = 10
Output: 0 1 1 2 3 5 8 13 21 34

Question 32

Prime Numbers up to N

Problem

Write a program to print all prime numbers up to n.

Example:

Input: n = 30
Output: 2 3 5 7 11 13 17 19 23 29

Question 33

Armstrong Numbers

Problem

Write a program to print the Armstrong numbers between 1 and n.

Example:

Input: n = 500
Output: 1 153 370 371 407

Question 34

Pattern Series

Problem

Write a program to print the pattern series like 1, 12, 123, 1234, ..., up to n.

Example:

Input: n = 5
Output:
1
12
123
1234
12345

Question 35

Sum of Harmonic Series

Problem

Write a program to print the sum of the series 1 + 1/2 + 1/3 + ... + 1/n.

Example:

Input: n = 5
Output: 2.2833333333333332

Question 36

Decimal to Binary

Problem

Write a program to convert a decimal number to binary.

Example:

Input: 10
Output: 1010

Question 37

Binary to Decimal

Problem

Write a program to convert a binary number to decimal.

Example:

Input: "1010"
Output: 10

Question 38

Decimal to Hexadecimal

Problem

Write a program to convert a decimal number to hexadecimal.

Example:

Input: 255
Output: ff

Question 39

Fahrenheit to Celsius

Problem

Write a program to convert Fahrenheit to Celsius.

Example:

Input: 100.0
Output: 37.77777777777778

Question 40

String to Integer Without parseInt

Problem

Write a program to convert a string to an integer without using Integer.parseInt().

Example:

Input: "123"
Output: 123

Question 41

Bubble Sort

Problem

Implement the bubble sort algorithm for a given array of integers.

Example:

Input: [64, 34, 25, 12, 22, 11, 90]
Output: [11, 12, 22, 25, 34, 64, 90]

Question 42

Insertion Sort

Problem

Implement the insertion sort algorithm for a given array of integers.

Example:

Input: [12, 11, 13, 5, 6]
Output: [5, 6, 11, 12, 13]

Question 43

Selection Sort

Problem

Implement the selection sort algorithm for a given array of integers.

Example:

Input: [64, 25, 12, 22, 11]
Output: [11, 12, 22, 25, 64]

Question 44

Quick Sort

Problem

Implement the quick sort algorithm for a given array of integers.

Example:

Input: [10, 7, 8, 9, 1, 5]
Output: [1, 5, 7, 8, 9, 10]

Question 45

Merge Sort

Problem

Implement the merge sort algorithm for a given array of integers.

Example:

Input: [12, 11, 13, 5, 6, 7]
Output: [5, 6, 7, 11, 12, 13]

Question 46

Towers of Hanoi

Problem

Write a program to solve the Towers of Hanoi problem with 'n' disks.

Example:

Input: n = 3
Output: Sequence of moves to transfer 3 disks from rod A to rod C using rod B

Question 47

Longest Common Subsequence (LCS)

Problem

Write a program to find the Longest Common Subsequence (LCS) in two strings.

Example:

Input: s1 = "AGGTAB", s2 = "GXTXAYB"
Output: 4

Question 48

All Permutations of a String

Problem

Write a program to find all permutations of a string.

Example:

Input: "ABC"
Output: ABC ACB BAC BCA CBA CAB

Question 49

Breadth-First Search (BFS)

Problem

Write an algorithm to implement breadth-first search (BFS) for a graph.

Question 50

Depth-First Search (DFS)

Problem

Write an algorithm to implement depth-first search (DFS) for a graph.

Question 51

Heap Sort

Problem

Implement an algorithm to sort an array using the heap sort method.

Question 52

Dijkstra's Algorithm

Problem

Write a program to find the shortest path between two nodes in a weighted graph using Dijkstra's Algorithm.

Question 53

Binary Tree Traversals

Problem

Write a program to find the InOrder, PreOrder, and PostOrder traversal of a Binary Tree.

Question 54

Encapsulation

Problem

Explain the concept of encapsulation with a coding example.

Question 55

Polymorphism

Problem

Write a program to implement polymorphism in Java.

Question 56

Overloading vs Overriding

Problem

What is the difference between overloading and overriding? Provide a code example.

Question 57

Inheritance

Problem

Explain the concept of inheritance with an example. What are the different types of inheritance supported in Java and C++?

Question 58

Interfaces

Problem

Write a program to implement an interface in Java. Also explain the difference between a class and an interface.

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TCS 2026-nqt

Practice Questions

Work and Production Rate

Problem

Discount and Profit

Problem

Volume of a Cube

Problem

Average Speed

Problem

Profit Percentage

Problem

Simplification

Problem

Linear Equation

Problem

Discounted Price

Problem

Consecutive Odd Numbers

Problem

Time to Cover Distance

Problem

Synonym

Problem

Spelling

Problem

Subject-Verb Agreement

Problem

Fill in the Blank

Problem

Use of Articles

Problem

Number Series

Problem

Coding-Decoding

Problem

Odd One Out

Problem

Letter Coding

Problem

Alphabetical Ordering

Problem

Second Largest Element in an Array

Problem

Reverse an Array In-Place

Problem

Find Duplicate Elements in an Array

Problem

Count Even and Odd Integers

Problem

Common Elements Between Two Sorted Arrays

Problem

Palindrome Check

Problem

Reverse Words in a Sentence

Problem

Count Vowels and Consonants

Problem

Anagram Check

Problem

Convert String to Lowercase

Problem

Fibonacci Series

Problem

Prime Numbers up to N

Problem

Armstrong Numbers

Problem

Pattern Series

Problem

Sum of Harmonic Series

Problem

Decimal to Binary

Problem

Binary to Decimal