MathDB
Partition of {1,2,...,10} in three subsets

Source: Baltic Way 2016, Problem 6

November 5, 2016
algebra

Problem Statement

The set {1,2,...,10}\{1, 2, . . . , 10\} is partitioned to three subsets A,BA, B and C.C. For each subset the sum of its elements, the product of its elements and the sum of the digits of all its elements are calculated. Is it possible that AA alone has the largest sum of elements, BB alone has the largest product of elements, and CC alone has the largest sum of digits?