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Problem 459. Sum of diagonal of a square matrix

Created by Sunu

If

 x = [1 2 4; 3 4 5; 5 6 7]

then y should be the sum of the diagonals of the matrix

 y = 1 + 4 + 7 = 12

Problem Group

Solution Statistics

433 correct solutions 71 incorrect solutions
Last solution submitted on Aug 23, 2014

Solution Comments