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Feathers of different colors (Posted on 2018-10-06) Difficulty: 3 of 5
How many 3-digit primes with 3 distinct digits are there? Same question for 4 -digit primes with 4 distinct digits.

, Bonus: Generalize for n distinct primes and digits. (n=2 to 7).

AFAIK - not in OEIS.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Some Thoughtsre: computer-assisted solution and extension (spoiler)Ady TZIDON2018-10-17 10:46:43
Solutioncomputer-assisted solution and extension (spoiler)Charlie2018-10-06 11:28:05
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