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Tautonymic number counting (Posted on 2022-09-04) Difficulty: 3 of 5
Suppose you want to know how many tautonymic numbers are in the set of integers from 1 to N.
  • Can you provide a formula for this?
  • Otherwise, can you devise an algorithm, as efficient as possible, to find the answer?
  • Are there special values of N for which there is a simple formula?

See The Solution Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

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No Subject Comment 2 of 2 |
This is a difficult problem that I have not been able to find the answer to. Based on your explanation has made me understand better. 
  Posted by Arjun on 2023-07-19 02:27:02
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