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Secret Snowflake: Analysis of a Holiday Gift Exchange

Roger Turton 

December 2007, Volume 101, Issue 5, Page 332

Abstract:
Several discrete mathematics methods used to simulate and solve a rich problem occurring at a holiday gift exchange. What is the probability that two people will select each other's names in a random drawing, and how does this result vary with the total number of participants? Includes code for a computer simulation of the problem, sample work and results.

Keywords:
Sets
Article
Grades 9-12
Teacher
Lesson Plans
Modeling
Problem Solving / Problem Posing