PROBLEM 8.3 Exercise Set: Problem #42 Find the sum, if it exists.


PLEASE SEE ATTACHED.  I have provided an Example problem, showing what exact steps I need in solving #42.  If there is not an exisiting answer, please indicate why.  I have posted this probem before and received multiple conflicting answers.  I need to know the right answer.

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There is apparently a typo in the example answer.  

I think it is supposed to be S(lower 11) =, rather than S(lower51) =