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Reverse Rigor (Posted on 2014-04-04) Difficulty: 3 of 5
Define R(x) as the reverse of an integer x. For example, R(435) = 534.

Find the value of N, where:
  1. N is a 4-digit positive integer which is divisible by each of 11 and 13, and:
  2. R(N) is also divisible by each of 11 and 13, where N < R(N), and:
  3. None of N and R(N) can contain any leading zero.
Prove that there are no others.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
SolutionInteresting result solutionJer2014-04-04 13:10:20
SolutionanswerAdy TZIDON2014-04-04 11:03:25
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