Boy, I can see one has to hang in here a lot more than I can if one is to keep up. I see my race car puzzle was way to easy for this group. I remember Marilyn Vos Savant discussing the Monty Hall (cups) problem in the Parade Sunday roto section. A search for Marilyn turned up another good explanation, for the terminally curious, of why one should switch cups after one has been turned over.

Marion, I think Spaw was referring to three card monty, a common street shell game in large urban areas.

      - Mark