Why does my recursive function with if-elif statements return None?

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Music by Eric Matyas
Track title: Book End

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Chapters
00:00 Why Does My Recursive Function With If-Elif Statements Return None?
00:53 Answer 1 Score 2
01:04 Answer 2 Score 1
01:11 Accepted Answer Score 3
02:01 Answer 4 Score 0
02:08 Thank you

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Full question

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Tags
#python #recursion

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