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AABBCCDD and Perfect Square (Posted on 2016-05-16) Difficulty: 3 of 5
By adding 1 to the non leading zeros number N= AABBCCDD, we get a perfect square. Find N.
(A, B, C and D are different base ten digits.)

*** AABBCCDD denotes the concatenation of the digits and not their product .

Note: For an extra challenge, solve this puzzle without using a computer program aided method.

No Solution Yet Submitted by K Sengupta    
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Comments: ( Back to comment list | You must be logged in to post comments.)
re: computer solutions Comment 3 of 3 |
(In reply to computer solutions by Charlie)

All solutions repeat at least one digit in sqrt N+1.
  Posted by armando on 2016-05-16 16:46:48

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