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.
Back to basics 1 - Saving
Remove the two elements next to NaN value
03 - Matrix Variables 2
Area of an equilateral triangle
More Simple String Concatenation
Sum two matrices
Simple Vector Addition
Find the mean of two vectors
Simple String Concatenation
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