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Add 1, get a square II (Posted on 2009-04-26) Difficulty: 2 of 5
By adding 1 to the positive base N integer having the form XXXYYY with non leading zeroes, we get a perfect square- where X and Y are not necessarily distinct.

What are the value(s) of N, with 2 ≤ N ≤ 16, for which this is possible?

See The Solution Submitted by K Sengupta    
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  Subject Author Date
SolutionsolutionDej Mar2009-04-26 19:19:40
Solutionsolution and computer explorationCharlie2009-04-26 17:42:04
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