Problem 1
Source: Paraguayan Mathematical Olympiad 2012
October 15, 2012
number theory proposednumber theory
Problem Statement
Define a list of number with the following properties:
- The first number of the list is a one-digit natural number.
- Each number (since the second) is obtained by adding to the number before in the list.
- The number is in that list.
Find the first number of the list.