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

• Which doors are open?

  3433 Solvers

• Find the sum of the elements in the "second" diagonal

  1204 Solvers

• Compute a dot product of two vectors x and y

  1050 Solvers

• Sophie Germain prime

  1065 Solvers

• frame of the matrix

  925 Solvers

More from this Author43

• Find the path through the cell

  45 Solvers

• Chess probability

  679 Solvers

• BLOCK x3 (Version 3)

  10 Solvers

• Bouncy numbers

  45 Solvers

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

  18 Solvers