Coupon collector's problem (generating function approach)

Hi, everybody! My name is Dora.
It is a little about myself: I live in Great Britain, my city of Slattadale.
It's called often Northern or cultural capital of . I've married 4 years ago.
I have 2 children - a son (Connie) and the daughter (Laurene). We all like Shortwave listening.

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