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.
Back to basics 22 - Rotate a matrix
Sum the Digits of a Number
Close MATLAB with keyboard
Let's get back to school, and create multiplication tables
Find the dimensions of a matrix
Find remainder when x is divided by 3
Calculating selling price
find the mean of all elements in a matrix
Find the last digit
modulus of a number
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