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SUBMIT YOUR IDEAThink that New York City may be missing from the Output, as there's no NFL team there yet it's not included?
Loved the Sports theme :)
I got 47 too - my reasoning was that it has 2 Ice Hockey teams, so the given solution (sorting by team names) doesn't find distinct leagues. However, I'm in agreement with your answer!
Similar to others, I used a countdistinct on Leagues and came up with 48 (vs solution of 47) teams. NYC is the difference with 5 teams but not 5 leagues.