Wolfram Demonstrations Project

This Demonstration shows the total number of handshakes (pairwise connections) among a group of people. The

person adds

connections, the number of people already in the group. So if

is the number of connections between

people,

and

Contributed by: Bob Hanlon

Suggested by: Matthew Hoek and Daniel Lichtblau

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Common Core State Standards for Mathematics

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Number of Handshakes