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I was bored the other day and I stumbled across a webcomic site. In my boredom, I kept on clicking "random" to choose a random comic. After a couple clicks on the random button, a comic that I had already read popped up.

Assuming it was truly random, I would have to run out of comics sometime. Also, as the amount that I read got smaller and smaller, clicking the random button would give me more and more comics that I had already read.

So now I'm wondering how I could go about getting an approximate number of how many individual comics exist on the site by applying some statistics to my initial few clicks (assuming that out of these clicks I will mostly get comics I haven't read but I will also get some repeats).

Thanks.

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# Inferring quantity based on changing repitition rate

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