It dseon't mettar waht oedrr the lrettes in a wrod are.
Back to basics 19 - character types
Return the first and last character of a string
Generate a random matrix A of (1,-1)
Return area of square
Back to basics 24 - Symbolic variables
Back to basics 9 - Indexed References
Convert Roman to Arabic Numerals
Back to basics 7 - Equal NaNs
Convert Hard Drive marketing sizes to actual data sizes
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