Problem 548. How many palindromes?

  • Given a set of letters, count all possible palindromes, using all of those letters.
  • For example, if the set is {'A' 'A' 'A'} then the number is 1.
  • If the set is {'A 'A' 'B'} then the number is 1.
  • If the set is {'A' 'B' 'C'} then the number is 0.
Solve

Solution Stats

55.22% Correct | 44.78% Incorrect
Last Solution submitted on Jun 28, 2025

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