Chance News (July-August 2005)

From ChanceWiki
Revision as of 19:20, 1 July 2005 by Jls (talk | contribs)
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Under construction. See Chance News (May-June 2005) for additional recent chance news.

Numbers are like people; torture them enough and they'll tell you anything.


Here is a nice probability question that one of our students asked us to solve.

QUESTION: We start with n ropes and gather their 2n ends together.

Then we randomly pair the ends and make n joins. Let E(n) be the

expected number of loops. What is E(n)?

If you happen to know a reference for this problem please mention this in the discussion page for this chance news.