Question
Can you fill a `5xx5` table with real numbers such that the sum of each row is positive, and the sum of each column is negative?
Difficulty level (1 very easy - 10 very hard): 2
Topics:
Combinatorics
->
Double Counting
Logic
->
Reasoning / Logic
Proof and Example
->
Proof by Contradiction
讘谞讬诪讬谉 诪专讝讜谉 - 4 years ago
诇讗
注讚讬 讚诪专讬 - 5 years ago