11193
EXPLORE
LATEST
ABOUT
AUTHORING AREA
PARTICIPATE
Your browser does not support JavaScript or it may be disabled!
Number of Handshakes
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
Suggestions by:
Daniel Lichtblau
and
Sjoerd C. de Vries
THINGS TO TRY
Automatic Animation
SNAPSHOTS
RELATED LINKS
Triangular Number
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Number of Handshakes
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/NumberOfHandshakes/
Contributed by:
Bob Hanlon
Suggested by: Matthew Hoek and
Daniel Lichtblau
Suggestions by:
Daniel Lichtblau
and
Sjoerd C. de Vries
Share:
Embed Interactive Demonstration
New!
Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site.
More details »
Download Demonstration as CDF »
Download Author Code »
(preview »)
Files require
Wolfram
CDF Player
or
Mathematica
.
Related Demonstrations
More by Author
Consecutive Smooth Numbers
Ed Pegg Jr
Catalan Number Trees
Robert Dickau
Schröder Number Diagrams
Robert Dickau
Motzkin Number Diagrams
Robert Dickau
Bell Number Diagrams
Robert Dickau
Equivalence of Three Catalan Number Interpretations
Robert Dickau
The Number of Fixed Points in a Random Permutation
Elcio Lebensztayn
The Number of Partitions with a Given Largest Part
Jon Perry
One Interpretation of a Catalan Number Recurrence Relation
Robert Dickau
Lah Numbers
Robert Dickau
Related Topics
Combinatorics
Discrete Mathematics
Recreational Mathematics
High School Finite Mathematics
High School Mathematics
Middle School Mathematics
Browse all topics
Related Curriculum Standards
US Common Core State Standards, Mathematics
HSS-CP.B.9
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to
Mathematica Player 7EX
I already have
Mathematica Player
or
Mathematica 7+