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Sum of the page numbers (Posted on 2018-11-05) Difficulty: 1 of 5
What is the sum of the page numbers of the middle two pages
in a book with k pages?

See The Solution Submitted by Ady TZIDON    
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Hints/Tips re(2): Not so simple (spoiler) Comment 3 of 3 |
(In reply to re: Not so simple (spoiler) by Charlie)

My intention was to make the solver understand that :

i.  k cannot be 1 
ii.  there are 2 different evaluations for even k and odd k.
SH explanation makes it so simple!

  Posted by Ady TZIDON on 2018-11-05 10:41:43
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