MathDB
Problems
Contests
National and Regional Contests
China Contests
China Girls Math Olympiad
2023 China Girls Math Olympiad
2
2
Part of
2023 China Girls Math Olympiad
Problems
(1)
Chinese Girls Mathematics Olympiads 2023, Problem 2
Source: Chinese Girls Mathematics Olympiads 2023
8/12/2023
On an
8
×
8
8\times 8
8
×
8
chessboard, place a stick on each edge of each grid (on a common edge of two grid only one stick will be placed). What is the minimum number of sticks to be deleted so that the remaining sticks do not form any rectangle?
combinatorics