[geetfun]

N is the sample size that you’ve sampled already in your observation.

If you’ve sampled all the pages, then we are talking about certainty which this wouldn’t apply.

[Koshkin]

The assertion was that the probability is less than 3/N.

[blowski]

In my example, there’s either 1 page or 19800 pages left. But the post suggests the probability of a typo is the same in both cases.

[babygoat]

It's the probability of finding a typo on a page, not the remainder of the book.

[blowski]

Ah now I see the difference, thank you.