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.
Determine if input is odd
07 - Common functions and indexing 2
UICBioE240 problem 1.18
Automatic String Editing
Find the index of the lowest number in a matrix
Sum two matrices
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