MathDB
Team Round P10

Source:

October 16, 2021
MOAA 2021team

Problem Statement

For how many nonempty subsets S⊆{1,2,…,10}S \subseteq \{1, 2, \ldots , 10\} is the sum of all elements in SS even?
Proposed by Andrew Wen
Back to ProblemsView on AoPS