I think the description and test suite on this problem is slightly off. When I see 'union' I already assume that no duplicates are permitted and order is irrelevant.
give nth decimal place of pi
Equal to their cube
05 - Vector Equations 2
Hard limit function
Product of elements in row
Find the index of n in magic(n)
most frequent character
index of n^2 in magic(n)
execute the declaration in strings and return value
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