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Pandigital and Doubly Pandigital (Posted on 2009-06-02) Difficulty: 3 of 5
Determine all possible triplet(s) (P, Q, N), where each of P and Q is a five digit positive base ten integer with P > Q and P*Q = N, such that:

  • P and Q together contain each of the digits from 0 to 9 exactly once, and:
  • N contains each of the digits from 0 to 9 exactly once, and:
  • N2 contains each of the digits from 0 to 9 exactly twice. Neither N nor N2 can contain any leading zero.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
agreement with computer solutionDej Mar2009-06-03 02:02:37
Solutioncomputer solutionCharlie2009-06-02 14:02:33
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