if you're going to post trivial problems that have already been posted before, at least use a proper test suite.
and this one does not even require a solution
How to subtract?
How many jokers?
Speed of car
Sum the squares of numbers from 1 to n
Matlab Basics II - Count rows in a matrix
Matlab Basics II - Determine if an array has a 3rd dimension
Matlab Basics - Absolute Value
Finding an element in a vector
Matlab Basics - Rounding III
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