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5 votes
1 answer
105 views

Math of Jury Sizes

If we go by the assumption that a Jury is a representation of the public at large, then is 12 people statistically signficant? When doing any scientific survey or poll, a sample of 12 people would be ...
zooby's user avatar
  • 4,425
2 votes
2 answers
67 views

Correctly labelling people in a lineup

I've been watching video's like this* where someone is asked to label a group of people. All people in a line have a label that is distinct from all the others in the line. The labeller receives $n$ ...
Lerak's user avatar
  • 55
9 votes
4 answers
1k views

An unexpected application of non-trivial combinatorics

PROBLEM STATEMENT Given two finite sets $A$ and $B$, each containing $s \in \mathbb N$ elements, how many pairs of functions $f \colon A \rightarrow B$ and $g \colon B \rightarrow A$ are there, ...
Pastafarianist's user avatar