November 28, 2015

Homework Help: COmbinatorics

Posted by Carlos on Tuesday, February 5, 2013 at 8:58pm.

A DNA chain is a string of As, Ts, Gs, and Cs. How many DNA
chains are there of length 12 which have the following properties?
Choose two of (a), (b), or (c) to submit:
(a) Is a palindrome (A palindrome reads the same forwards and
backwards, e.g., TAGGAT.)

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