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A number pyramid (Posted on 2012-05-18) Difficulty: 2 of 5
Divide a set of 10 distinct digits into 4 subsets, each containing a different number of digits, adhering to the following conditions:

Two sets contain digits that can form a reversible prime, in the third set one can create a reversible square number and the remaining set has exactly one member twice as big as another.

Obeying the above restrictions do we get two distinct solutions - as I hope - or more?

  Submitted by Ady TZIDON    
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Solution: (Hide)
There are 11 distinct solutions.
See excellent presentation in Charlie's second post.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Solutionre(2): computer result: 11 solutions and two almost-solutionsCharlie2012-05-18 18:09:20
Hints/Tipsre: computer result: 11 solutions and two almost-solutionsAdy TZIDON2012-05-18 17:35:56
Solutioncomputer result: 11 solutions and two almost-solutionsCharlie2012-05-18 15:16:23
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