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Recent Articles
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 ...
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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 ...
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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: ...
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Tree
Pattern Searching
Mathematical
DSA
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...
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Mathematical
C++ Programs
DSA
series-sum
harmonic progression
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 ...
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DSA
series
series-sum
harmonic progression
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...
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Mathematical
DSA
divisibility
series
number-theory
harmonic progression
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 +...
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Mathematical
Technical Scripter
DSA
series
Numbers
harmonic progression
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...
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Misc
Mathematical
DSA
series
harmonic progression
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...
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Misc
Mathematical
DSA
series
series-sum
harmonic progression
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...
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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...
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Mathematical
Randomized
DSA
harmonic progression
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 ...
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Mathematical
DSA
Basic Coding Problems
series
harmonic progression