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.
Number of Horns on a unicorn!
Symmetry of vector
Matlab Basics - Logical Tests I
Product of Array
Basic commands - Least common multiple
Find the last digit
find the mean of all elements in a matrix
Find remainder when x is divided by 3
find a specific element from an matrix
Determine whether the input is divisible by 3 as well as 5
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