Nth number whose sum of digit is multiple of 10

Count of N-digit numbers having digit XOR as single digit

Count all N digit numbers whose digits are multiple of X

Largest number less than N with digit sum greater than the digit sum of N

Find Nth number in a sequence which is not a multiple of a given number

Print all n-digit numbers whose sum of digits equals to given sum

Maximum sum of two elements whose digit sum is equal

Count numbers whose maximum sum of distinct digit-sum is less than or equals M

Count of n digit numbers whose sum of digits equals to given sum

Nth term of a sequence formed by sum of current term with product of its largest and smallest digit

Generate a number such that the frequency of each digit is digit times the frequency in given number

Minimum N-Digit number required to obtain largest N-digit number after performing given operations

Smallest number whose sum of digits is N and every digit occurring at most K times

Smallest N digit number whose sum of square of digits is a Perfect Square

Find nth number that contains the digit k or divisible by k.

Program to delete Nth digit of a Number

Find the Nth digit from right in base B of the given number in Decimal base

Nth natural number after removing all numbers consisting of the digit 9

Largest number less than N whose each digit is prime number

Find Nth positive number whose digital root is X

Nth positive number whose absolute difference of adjacent digits is at most 1

Smallest integer with digit sum M and multiple of N

Count numbers in a range with digit sum divisible by K having first and last digit different

Smallest N digit number which is a multiple of 5

Find the remainder when First digit of a number is divided by its Last digit