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.
Add two numbers
07 - Common functions and indexing 2
07 - Common functions and indexing 6
Reverse a matrix
Product of elements in row
Find the last digit
find a specific element from an matrix
multiply an array by its position number
Find remainder when x is divided by 3
modulus of a number
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