An integer number in base 10 which is divisible by sum of it digits is said to be a Harshad Number. An n-harshad number is… Read More

# Category Archives: Mathematical

Given a number n, the task is to find out whether this number is smith or not. A Smith Number is a composite number whose… Read More

A Kaprekar number is a number whose square when divided into two parts and such that sum of parts is equal to the original number… Read More

A n digit number x is called Keith number if it appears in a special sequence (defined below) generated using its digits. The special sequence… Read More

Lucas numbers are similar to Fibonacci numbers. Lucas numbers are also defined as the sum of its two immediately previous terms. But here the first… Read More

Find the Smallest number (Not leading Zeros) which can be obtained by rearranging the digits of given number. Examples: Input: n = 846903 Output: 304689… Read More

Given an integer n, find the nth Pentagonal number. The first three pentagonal numbers are 1, 5, and 12 (Please see below diagram). The n’th… Read More

Given two integers n and k. Find position the n’th multiple of K in the Fibonacci series. Examples : Input : k = 2, n… Read More

Given a number n such that 1 <= N <= 10^6, the Task is to Find the LCM of First n Natural Numbers. Examples: Input… Read More

Given an array arr[] such that 1 <= arr[i] <= 10^12, the task is to find prime factors of LCM of array elements. Examples: Input… Read More

Given a large number as a string, find the remainder of number when divided by 7. Examples : Input : num = 1234 Output :… Read More

Given three integers x, y, z, the task is to compute the value of GCD(LCM(x,y), LCM(x,z)). Where, GCD = Greatest Common Divisor, LCM = Least… Read More

Given a number “n”, find if it is Disarium or not. A number is called Disarium if sum of its digits powered with their respective… Read More

Given a number n, the task is to check whether it can be expressed as a sum of two or more consecutive numbers or not.… Read More

Given a sequence with some of its term, we need to calculate next K term of this sequence. It is given that sequence is generated… Read More