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All/Any different? (Posted on 2005-08-16) Difficulty: 4 of 5
Given positive integer n, consider the set of numbers {n²+1, n²+2, ... (n+1)²}. If we pick two numbers x and y out of that set, how many different values can the product xy take?

See The Solution Submitted by Federico Kereki    
Rating: 3.5000 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(3): what am I missing? - to Josh | Comment 14 of 27 |
(In reply to re(2): what am I missing? by Josh70679)

Josh, nice work, but why the second factor is (n+1) and not n?
  Posted by pcbouhid on 2005-08-16 23:08:49

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