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Infinitely Summed NOD Function (Posted on 2024-08-26) Difficulty: 3 of 5
D(n) denotes the number of digits in the positive integer N.

Evaluate:

 ∞
 Σ {(D(n))!}-1
n=1

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
Solutionre: SolutionCharlie2024-08-27 07:00:07
SolutionSolutionBrian Smith2024-08-26 09:58:05
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