Current location - Training Enrollment Network - Mathematics courses - Ladies and gentlemen, how to calculate this nine-square grid? The sum of each row and column is the same. How to calculate. I am a novice in mathematics. thank you
Ladies and gentlemen, how to calculate this nine-square grid? The sum of each row and column is the same. How to calculate. I am a novice in mathematics. thank you
Solid square

The numbers of 1-9 are all equal to 15, and the middle number is 5.

therefore

This nine-square grid is:

(6)( 1)(8)

(7)(5)(3)

(2)(9)(4)