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comment What is the expected number of rounds that everyone get back their own ball?
Ya, that's what i have thought but the $x$ can be infinity right? And if $x$ is infinity, i think the expression of the expection is kind of weird and i am not sure how the expression would be like
Oct
24
comment What is the expected number of rounds that everyone get back their own ball?
Sorry, when i get deeper thought to the solution i get a little bit confused. Could you explain more about the part that once you find expected value of n people is 1 then you claim the expected round is n. Can it be Written in terms of the Random Variable? The reason i get confused is when finding the expected values of the number of rounds, it seems there could be infinite many so i dont quite get although it sounds true.
Oct
21
accepted What is the expected number of rounds that everyone get back their own ball?
Oct
21
asked What is the expected number of rounds that everyone get back their own ball?
Oct
21
accepted If $G$ is a finite group, then $\operatorname{ord}S(a)=\operatorname{ord}(G)/\operatorname{Ord}(C(a))$