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?

(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