Problem 2193. Mysterious digits operation (easy)

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

Solution Comments

Problem Recent Solvers319

Suggested Problems

• Counting in Finnish

  1882 Solvers

• Sum all integers from 1 to 2^n

  17474 Solvers

• Project Euler: Problem 2, Sum of even Fibonacci

  2835 Solvers

• Project Euler: Problem 4, Palindromic numbers

  1268 Solvers

• Back to basics 6 - Column Vector

  1106 Solvers

More from this Author43

• Negation and new variables

  21 Solvers

• Find indices of diagonal elements

  71 Solvers

• Longest Collatz Sequence

  137 Solvers

• Can you beat the lottery again (for hardcore coder) ?

  14 Solvers

• Mirror, mirror on the wall, who is fairest of them all?

  18 Solvers