What is the sum of the following sequence:
Σk⋅k! for k=1...n
for different n?
Additional test cases have been added.
Determine if a Given Number is a Triangle Number
Right and wrong
Determine Whether an array is empty
Given a 4x4 matrix, swap the two middle columns
07 - Common functions and indexing 2
Sum of series II
Sum of series III
Sum of series I
Sum of series V
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