This would be better as "find the nth element of an array." Also, a column matrix doesn't exist. Perhaps you meant column vector, though the variables in your test cases are row vectors.
Maximum value in a matrix
Matlab Basics II - Count rows in a matrix
Finding perimeter of a rectangle
MATLAB Basic: rounding
Convert radians to degrees
find the mean of all elements in a matrix
modulus of a number
Calculating selling price
find a specific element from an matrix
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