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 logic
Try 1.5.4: Celsius to Fahrenheit
Simple equation: Annual salary
Sum of the Multiplication of Vectors
Convert radians to degrees
multiply an array by its position number
Find remainder when x is divided by 3
find the mean of all elements in a matrix
find a specific element from an matrix
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