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.
Find the longest sequence of 1's in a binary sequence.
Return area of square
05 - Vector Equations 1
Append two matrix as shown below example
Find remainder when x is divided by 3
multiply an array by its position number
Determine whether the input is divisible by 3 as well as 5
Calculating selling price
modulus of a number
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