Chance News (July-August 2005): Difference between revisions
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Here is a nice probability question that one of our students | Here is a nice probability question that one of our students asked us to solve. | ||
<blockquote>QUESTION: We start with n ropes and gather their 2n ends together.<br> | <blockquote>QUESTION: We start with n ropes and gather their 2n ends together.<br> | ||
Then we randomly pair the ends and make n joins. Let E(n) be the<br> | Then we randomly pair the ends and make n joins. Let E(n) be the<br> | ||
expected number of loops. What is E(n)? </blockquote> | expected number of loops. What is E(n)? </blockquote> | ||
If you happen to know a reference to this problem please mention this in the discussion page for this chance news. | |||
Revision as of 19:19, 1 July 2005
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 to this problem please mention this in the discussion page for this chance news.