Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).
Additional test cases have been added.
radius of a spherical planet
Back to basics 11 - Max Integer
Who has power to do everything in this world?
sum all digits
Matrix Ax=B problem
Sum two matrices
Find the index of the lowest number in a matrix
Matrix element wise multiplication
Matrix Generation from Vector Multiplication
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