Cody

Problem 2193. Mysterious digits operation (easy)

What is this digit operation?

 0    -> 0
 1    -> 9
 121  -> 9
 44   -> 6
 15   -> 5
 1243 -> 7
 ...

Solution Stats

60.0% Correct | 40.0% Incorrect
Last solution submitted on Jul 07, 2017

Problem Comments

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