2 values of stamps in the country of Postonia,
Source: 1996 Swedish Mathematical Competition p2
April 2, 2021
number theory
Problem Statement
In the country of Postonia, one wants to have only two values of stamps. These values should be integers greater than with the difference , and should have the property that one can combine the stamps for any postage which is greater than or equal to the sum of these two values. What values can be chosen?