55.
My Solution
However, the solution from the book goes like this:
Book Solution
or
What am I doing wrong? I copied the solution number/letter by number/letter.
Does the same thing for #56:
56.
My Solution
Book Solution
or
any help is appreciated.
Hmm, you are right, I misread this Wikipedia article and saw that the book started with and made a wrong conclusion. Sorry about that.