Question 880410
<pre>
I cannot understand why T A T A T A has 6 members.  Is there always
6 members taken from the 4 members {A,G,T,C}?  Why 4 letters to choose
from and 6 to choose?

If so, we want this   

{{{matrix(1,23,"P[(T", is, "first)", AND, "(A", is, "second)", AND, "(T", is, "third)", AND, "(A", is, "fourth)", AND, "(T", is, "fifth)", AND, "(A", is, "sixth)")}}} 

And since "AND" tells us to multiply probabilities:

{{{matrix(1,23,"P(T", is, "first)", "×", "P(A", is, "second)", "×", "P(T", is, "third)", "×", "P(A", is, "fourth)", "×", "P(T", is, "fifth)", "×", "P(A", is, "sixth)")}}} 

{{{1/4}}}{{{"×"}}}{{{1/4}}}{{{"×"}}}{{{1/4}}}{{{"×"}}}{{{1/4}}}{{{"×"}}}{{{1/4}}}{{{"×"}}}{{{1/4}}} {{{""=""}}} {{{(1/4)^6}}} {{{""=""}}} {{{1/4096}}}

I am not sure what you mean by the second part?  Are there always 6 letters,
as in T A T A T A?  Or are there sometimes only four, like T A T A, and
sometimes 7 or 8 like T A T A T A T, or T A T A T A T A, and sometimes even
only 2 like T A??  

If you will explain whether there are always 6 letters, as in  in T A T A T A
or if there can be other numbers of them besides 6 in the thank-you note, I'll
get back to= you and help you with the 2nd part. (free of charge, of course.)

Edwin</pre>