Dr Diana S. Perdue (a Fulbright scholar) has been most generous to write a guest post for White Group Mathematics which deals with the "classic handshake problem" but with an additional twist:
http://www.whitegroupmaths.com/2013/01/ ... uires.html
Hope you will find this insightful. Peace.
The classic handshake problem with a twist (permutation)
Is there life after O/A-Levels? Definitely! How well a person does in tertiary education is correlated with job opportunities open to the person. Discuss issues pertaining to nstitutes of higher learning here.