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Base N Perfect Square Poser (Posted on 2016-07-13) Difficulty: 3 of 5
Consider a base-N nonzero perfect square of the form X1X1X2X2, where X1 and X2 are base-N digits whether same or different.

Derive a general formula that expresses X1X1X2X2 in terms of N, where N is an integer > 3.

*** X1X1X2X2 is a concatenation of the digits and not the product.

No Solution Yet Submitted by K Sengupta    
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Addendum | Comment 1 of 2
Missed this condition in original problem text.

"X1 and X2 are nonzero digits"

Edited on July 13, 2016, 1:37 pm

Edited on July 13, 2016, 1:42 pm
  Posted by K Sengupta on 2016-07-13 13:36:41

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