Just to clarify the problem statement: the objective of this problem seems to be to determine the number of unique vowels used in the given string.
Correct output for Laboratory is 3.
Add two numbers
Sort a list of complex numbers based on far they are from the origin.
Back to basics 7 - Equal NaNs
Reverse CHECKBOX MATRIX with 69
ZigZag matrix with reflected format
BULLSEYE Part 3: Reference Problem 18 BULLSEYE
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