M121 Final Exam Quesion 7

Hello,

I am taking the M121 final exam and I only have the last question left, my problem is with the wording of the query, I just don’t understand what’s asked of me, specifically:

find which alliance has the most unique carriers(airlines)

What is meant by most unique carriers in an alliance? what’s the condition that must be met in an airline for it to be unique? I would be thankful if you could clarify the question more for me.

By has the most, they mean has the highest number.

By unique, they mean do not count twice the same airline.

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