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Let's make a deal (Posted on 2018-02-17) Difficulty: 3 of 5
Replace dashes by decimal digits,
using reasoning only.

There is only one solution!

  Submitted by Ady TZIDON    
Rating: 5.0000 (1 votes)
Solution: (Hide)
OEIS A003226 Automorphic numbers: n^2 ends with n.

PAY ATENTION: Only one 4-digit entry!

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionAnswerMath Man2018-02-17 09:43:16
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