Test for randomness could be tightened (cf. Solution 1490988).
Number of toolboxes?
Number of 1s in a binary string
Return the first and last character of a string
Matlab Basics - y as a function of x
02 - Vector Variables 4
06 - Matrix Equations 1
07 - Common functions and indexing 4
03 - Matrix Variables 3
07 - Common functions and indexing 6
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