Subject: Flipping pancakes and counting
Date: Sat, 7 Mar 1998 10:30:47 -0700 (MST)
From: Julien Faucher

Dear Dr. Bogomolny:

In your beautiful Interactive math pages on the web, in section Arithmetic and Algebra, there is the Flipping pancakes puzzle. Have you seen this puzzle treatead anywhere in more detail? I am interested in the following question:

    What is the minimum number of flips to put a stack of n pancakes in order for any initial ordering of pancakes?

Best regards,

Piotr (Peter) Rudnicki

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