Approximate the size of a set given random items from the set.
123616
Estimate the size of a set from which a sample has been equiprobably drawn?
28183
Probability of selecting an even natural number from the set $\Bbb N$.
115397
Calculate the tendency of a set of samples
40927
Weighted random selection from array
11849
Size of a union of two sets
141502
Take n random elements from a List?
155311
How to get a set $E$ such that $0<\mu(E\cap I)<\mu(E)$ for all interval $I$?
26569
Counting binary operations on a set with $n$ elements
98850
A positional number system for enumerating fixed-size subsets?
156176
Lebesgue measurability of nearly identical sets
7944
What algorithm can be used for packing rectangles of different sizes into the smallest rectangle possible in a fairly optimal way?
130514
best way to pick a random subset from a collection?
2602
How do I create a weighted collection and then pick a random element from it?
152642
Expectation of Minimum of $n$ i.i.d. uniform random variables.
106397
Counting ways to partition a set into fixed number of subsets
62175
A general formula for $n$ distinguishable arrangements of length $\ell$ of a sequence of a given size?
157572
The distance between two sets inside euclidean space