Calculate sum of positive elements of the matrix.
Which values occur exactly three times?
Number of 1s in a binary string
Create a Matrix of Zeros
Calculate volume of box
Back to Basics - Find no. of elements in a matrix?
Form a square matrix from four square sub-matrices
Create a square matrix with given conditions
Find product of eigenvalues of n*n magic matrix.
Select primes from the matrix.
Calculate the sum of elements of n*n Hilbert matrix.
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