At a minimum, you should make this problem variable. For example, find the element at the ith row and jth column and define i and j in the test cases, which are passed along with the function.
Finding Perfect Squares
Square the input
Find the sum of n squares
Make roundn function
Find the last digit
multiply an array by its position number
Find remainder when x is divided by 3
modulus of a number
find the mean of all elements in a matrix
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