MathDB
placing numbers in chessboard

Source: LIMIT 2019 CAS2 P5

April 28, 2021
combinatorics

Problem Statement

6464 numbers (not necessarily distinct) are placed on the squares of a chessboard such that the sum of the numbers in every 2×22\times2 square is 77. What is the sum of the four numbers in the corners of the board?
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