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.
Times 2 - START HERE
Back to basics 6 - Column Vector
Sum of diagonal of a square matrix
Simple equation: Annual salary
Matrix Ax=B problem
Find the sum of the largest two elements in a vector
Simple String Concatenation
Automatic String Editing
Find the index of the lowest number in a matrix
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