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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?

  Submitted by Ady TZIDON    
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Solution: (Hide)
answer: k+1, if k is even,
either k or k+2, if k is odd

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Hints/Tipsre(2): Not so simple (spoiler)Ady TZIDON2018-11-05 10:41:43
re: Not so simple (spoiler)Charlie2018-11-05 10:24:28
SolutionNot so simple (spoiler)Steve Herman2018-11-05 09:35:58
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