I am having trouble with what seems to be a simple combinations or permutations problem as follows: Melodies for more than 14,000 songs are listed according to the following scheme" The first note of every song is represented by anasterisk * and successive notes are represented by R (for repeat of previous note), U (for a note that goes up), or D (for a note that goes down).(adsbygoogle = window.adsbygoogle || []).push({});

Classical melodies are represented through the first 16 notes. With this scheme, how many classical melodies are possible?

Any help or hints on this will be appreciated.

Thanks,

jw

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# Supposedly simple statistics problem

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