# Tag Archives: series

## Arithmetic Progression – Sum of First n Terms | Class 10 Maths

In Algebra a term is either a single number or variable or numbers and variables multiplied together. Terms are separated by + or − signs,… Read More »

## Least common element in given two Arithmetic sequences

Given four positive numbers A, B, C, D, such that A and B are the first term and the common difference of first Arithmetic sequence… Read More »

## 3 Different ways to print Fibonacci series in Java

Given a number N, we need to find the Fibonacci Series up to the N term. The Fibonacci series is a series of elements where,… Read More »

## Represent K as sum of N-bonacci numbers

Given two numbers K and N. The task is to represent the given number K as a sum of several N-bonacci numbers. Examples: Input: K… Read More »

## Find all numbers up to N which are both Pentagonal and Hexagonal

Given an integer N, the task is to find all numbers up to N, which are both Pentagonal as well as Hexagonal. Example: Input: N… Read More »

## Smallest number whose square has N digits

Given a number N, the task is to find the smallest number whose square has N digits. Examples: Input: N = 2 Output: 4 Explanation:… Read More »

## Junction Numbers

Junction Number is a number N if it can be written as K + SumOfDIgits(k) for at least two K. 101, 103, 105, 107, 109,… Read More »

## Practical Numbers

Practical Number is a number N if all the numbers M < N can be written as the sum of distinct proper divisors of N.… Read More »

## Tcefrep Numbers

Tcefrep Number a number N such that reverse(n) = sum of the proper divisors of N. 6, 498906, 20671542, 41673714…. Check if N is a… Read More »

A Katadrome number is a number whose digits are in decreasing order. Few Katadrome numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8,… Read More »

## Super Niven Numbers

Super Niven Number is a number N if it is divisible not only by the sum of its digits but also by the sum of… Read More »

## Highly Composite Numbers

A number N is called highly composite if it has more divisors than any of the smaller numbers than N.Few Highly composite numbers are:   1,… Read More »

## Pentacontahenagon Number

Pentacontahenagon Number is a class of figurate numbers. It has a 51 sided polygon called Pentacontahenagon. The N-th Pentacontahenagon number count’s the 51 number of… Read More »

## Saint-Exupery Numbers

Saint-Exupery Number a number N such that N is the product of the three sides of Pythagorean triangle.Some of the Saint-Exupery numbers are:   60, 480,… Read More »

## Insolite Numbers

Insolite Number is a number N if it is divisible by the Sum and by the Product of the squares of its digits. Few Insolite… Read More »