MathDB
The Number of Subsets

Source: Bulgarian IMO TST 2005, Day 1, Problem 2

July 7, 2013
functiontrigonometrynumber theory proposednumber theory

Problem Statement

Find the number of the subsets BB of the set {1,2,⋯ ,2005}\{1,2,\cdots, 2005 \} such that the sum of the elements of BB is congruent to 20062006 modulo 20482048
Back to ProblemsView on AoPS