What is the sum of the following sequence:
Σ(2k-1)^2 for k=1...n
for different n?
Additional test cases have been added.
Reverse the Words (not letters) of a String
Is A the inverse of B?
Return the first and last character of a string
Basic arrays operations.
Find out sum of all elements of given Matrix
Sum of series IV
Sum of series VII
Sum of series III
Sum of series VI
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