find the first elements of a column matrix
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.
give nth decimal place of pi
Is this triangle right-angled?
Find the dimensions of a matrix
Finding perimeter of a rectangle
BASICS - sum part of vector
Find remainder when x is divided by 3
modulus of a number
Calculating selling price
Determine whether the input is divisible by 3 as well as 5
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