Cody

Problem 2193. Mysterious digits operation (easy)

What is this digit operation?

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

Solution Stats

55.28% Correct | 44.72% Incorrect
Last Solution submitted on Jul 06, 2020

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digits easy manipulation