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Tricks To solve AP, GP and HP Questions Quickly

Last Updated: 23 July 2025

The topic of progressions—Arithmetic Progression (AP), Geometric Progression (GP), and Harmonic Progression (HP)—plays a crucial role in various mathematical concepts and ...read more

Mathematics

School Learning

Geometric Progression

harmonic progression

Maths

placement

Arithmetic Progressions

Find a sequence of distinct integers whose Harmonic Mean is N

Last Updated: 23 July 2025

Given an integer N, the task is to find a sequence of distinct integers whose Harmonic Mean is N itself. In case such a sequence doesn't exist, print -1.Examples:Input: N ...read more

DSA

Data Structures

Analysis of Algorithms

harmonic progression

Check whether nodes of Binary Tree form Arithmetic, Geometric or Harmonic Progression

Last Updated: 12 July 2025

Given a binary tree, the task is to check whether the nodes in this tree form an arithmetic progression, geometric progression or harmonic progression.Examples:Input: ...read more

Aptitude-Progressions

Progressions

arithmetic progression

Geometric Progression

harmonic progression

Summation of floor of harmonic progression

Last Updated: 13 September 2022

Given an integer N, the task is to find the summation of the harmonic series\sum_{i=1}^{n} \lfloor{n/i}\rfloor.Examples:Input: N = 5Output: 10floor(3/1) + floor(3/2) + flo...read more

Program to find sum of harmonic series

Last Updated: 11 July 2025

Harmonic series is inverse of a arithmetic progression. In general, the terms in a harmonic progression can be denoted as 1/a, 1/(a + d), 1/(a + 2d), 1/(a + 3d) .... 1/(a ...read more

Check if the given number is Ore number or not

Last Updated: 11 July 2025

Given a positive integer n, check if it is an Ore number or not. Print 'YES' if n is an ore number otherwise print 'NO'.Ore Number: In mathematics, Ore numbers are positiv...read more

Program to find the Nth Harmonic Number

Last Updated: 20 March 2023

Given a number N. The task is to find the Nth Harmonic Number.Let the nth harmonic number be Hn.The harmonic series is as follows:H1 = 1H2 = H1 + 1/2H3 = H2 + 1/3H4 = H3 +...read more

Sum of series (n/1) + (n/2) + (n/3) + (n/4) +.......+ (n/n)

Last Updated: 11 August 2022

Given a value n, find the sum of series, (n/1) + (n/2) + (n/3) + (n/4) +.......+(n/n) where the value of n can be up to 10^12.Note: Consider only integer division.Examples...read more

Harmonic progression Sum

Last Updated: 10 August 2022

Given the first element of the progression 'a', common difference between the element 'd' and number of terms in the progression 'n', wheren, d, a \in [1, 100000]. The tas...read more

Progression - Aptitude Questions and Answers

Last Updated: 04 April 2026

A progression in mathematics is a sequence of numbers that follows a specific pattern or rule. Common Types of ProgressionsArithmetic Progression (AP): A sequence where ea...read more

Aptitude

arithmetic progression

Geometric Progression

harmonic progression

Quantitative Aptitude

Expected Number of Trials until Success

Last Updated: 23 July 2025

Consider the following famous puzzle.In a country, all families want a boy. They keep having babies till a boy is born. What is the expected ratio of boys and girls in the...read more

Program to find sum of series 1 + 1/2 + 1/3 + 1/4 + .. + 1/n

Last Updated: 16 February 2023

If inverse of a sequence follows rule of an A.P i.e, Arithmetic progression, then it is said to be in Harmonic Progression.In general, the terms in a harmonic progression ...read more

Mathematical

DSA

Basic Coding Problems

series

harmonic progression

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