B is for Brilliant

Discrete Mathematics Level 5

In each cell of the following \(7\times7\) square table, write one of the numbers \(1,2,3,4,5,6,7\) such that the numbers in each row and each column are distinct. What is the greatest possible value of the sum of the numbers written in the blue squares?

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.