Date: Mon, 12 Jan 1998 19:54:30 -0500

From: Alex Bogomolny

Dear Roger & family:

If you are into this kind of problems, I may heartily recommend a small book by F.Mosteller "Fifty Challenging Problems in Probability With Solutions." Especially relevant to your question are problems #45 and #46.

- Math expectation of the number of coincidences is 1
- Finds the probability of exactly r coincidences

All the best,

Alexander Bogomolny

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