Covering some basic topics I haven't seen elsewhere on Cody.
Return a value equal to the number of input arguments to the function.
what is purpose of prod?
Scoring for oriented dominoes
Return the first and last character of a string
Determine the square root
Back to basics 18 - justification
Back to basics 26 - Keywords
Back to basics 8 - Matrix Diagonals
Better bullseye matrix
Toolbox check part 3
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