Problem Description A Fibonacci sequence is calculated by adding the previous two members the sequence, with the first two members being both 1. F(1) = 1, F...
Problem Description Find and list all four-digit numbers in decimal notation that have the property that the sum of its four digits equals the sum of its digi...
Problem Description The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that d...
Problem Description The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that d...
Problem Description In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, ...
The digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then that digit is the digital ...
