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Mathematical

5.1K+ posts

Top Logic Building Problems for Interviews

Last Updated: 23 July 2025

Logic building problems are fundamental to developing strong problem-solving skills and mastering algorithms. These problems often require a deep understanding of patterns...read more

Mathematical

DSA

Product of Two Numbers

Last Updated: 23 July 2025

Given two numbers, a and b. Return the product of both the numbers.Examples:Input: a = 4, b = 5Output: 20Input: a = 3, b = 5Output: 15Table of Content[Expected Approach] U...read more

Mathematical

DSA

Nth term of AP from First Two Terms

Last Updated: 23 July 2025

Given two integers a1 and a2, the first and second terms of an Arithmetic Series respectively, the problem is to find the nthterm of the series.Examples :Input : a1 = 2, ...read more

Mathematical

DSA

arithmetic progression

Arithmetic Progressions

Steady-state probabilities in Markov Chains

Last Updated: 23 July 2025

A Markov chain is a statistical model that explains how a system transitions from one state to another, with the next state depending only on the present state and not on ...read more

Last Updated: 23 July 2025

Given two numbers a and b, the task is to swap them.Examples: Input: a = 2, b = 3Output: a = 3, b = 2Input: a = 20, b = 0Output: a = 0, b = 20Input: a = 10, b = 10Output: ...read more

Bit Magic

Mathematical

DSA

Factorial Coding Problems

Last Updated: 23 July 2025

Factorialof a number n is defined as the product of all the positive numbers less than n. In other words, Factorial of a number n can be calculated as: n × (n – 1) × (n – ...read more

Mathematical

DSA

factorial

Prime Number Coding Problems

Last Updated: 23 July 2025

Prime Numbers are natural numbers greater than 1 and can be divided by itself and 1 only. For instance, numbers 2, 3, 5, 7, and 11 are the prime numbers since they ca...read more

Tips and Tricks to Find GCD

Last Updated: 14 October 2024

Let us first discuss the standard method to find GCD of two numbers a and b.Step 1: List all the divisors of the number ‘a’.Step 2: List all the divisors of the number ‘b’...read more

Prime Factorization Tips and Tricks

Last Updated: 23 July 2025

Let us first go through the standard Prime Factorization by the Division Method. Then we will be talking about tips and tricks to make it faster.Step 1: Divide the number ...read more

Interesting Facts about Prime Factorization

Last Updated: 23 July 2025

1. Every integer greater than 1 can be uniquely factored into prime numbers. This is known as the Fundamental Theorem of Arithmetic. For example, 60 can be written as 22×3...read more

Mathematical

Mathematics

School Learning

Is 0 divisble by every Integer

Last Updated: 09 April 2025

Yes, 0 is considered to be divisible by every integer other than 0. Dividing by zero itself is undefined, so 0 is not divisible by 0.Why? Let a,b be integers. Then b is ...read more

Mathematical

Mathematics

School Learning

Climbing Stairs - Count ways to reach Nth stair (Order does not matter)

Last Updated: 23 July 2025

There arenstairs, and a person standing at the bottom wants to reach the top. The person can climb either1 stair or 2 stairs at a time. Count the number of ways, the perso...read more

Dynamic Programming

Mathematical

DSA

Check for Prime Number

Last Updated: 11 October 2025

Given a number n, check whether it is a prime number or not.Note: A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.Input: n ...read more

Prime Number Program | Code to Check whether a number is Prime or not

Last Updated: 23 July 2025

Given a positive integer n, write a code to check whether the number is prime. What is Prime Number?A prime is a natural number greater than 1 that has no positive divisor...read more

Last Updated: 18 July 2024

Imagine a row of N bulbs where all initially turned off. You perform a series of operations to toggle the state of these bulbs. On the first round, you turn on every bulb....read more

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