MathDB
2018-2019 Fall OMO Problem 1

Source:

November 7, 2018
troll

Problem Statement

Leonhard has five cards. Each card has a nonnegative integer written on it, and any two cards show relatively prime numbers. Compute the smallest possible value of the sum of the numbers on Leonhard's cards.
Note: Two integers are relatively prime if no positive integer other than 11 divides both numbers.
Proposed by ABCDE and Tristan Shin